Re: [sage-support] Re: Sage's running too slowly
I have installed Sage (with the file sage-5.0-disk1.vmdk) on my Windows 64-bits (4 GB RAM, and processor of 2.4 GHz), and it is already running in my Virtual Box. But it's way too slow, even for the simplest commands, does anyone have any idea of what could be the reason for this? My virtual machine is running Sage in Fedora with 512 MB of memory and 16 MB of video memory. Are you using the command line interface or the Sage notebook? Also, can you have a look at the memory situation inside the virtual machine (for instance, using top from the command line)? It could be that you are running out of RAM and are using the swap a lot, which makes things very slow. Of course, in that case doing *anything* inside the virtual machine would feel quite slow. -- Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne http://aghitza.org -- You received this message because you are subscribed to the Google Groups sage-support group. To post to this group, send email to sage-support@googlegroups.com. To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support?hl=en.
Re: [sage-support] Calling up pi to nth decimal place.
On Sat, Aug 18, 2012 at 9:06 AM, Robert Bradshaw rober...@gmail.com wrote: BBP won't help you compute the decimal digits of pi. And this has nothing to do with pi: knowing some of the hexadecimal digits of a number does not allow you to find some of the decimal digits. Base conversion requires you to know all the digits from the fraction point to the part you are interested in. (Try it yourself: I have a number N whose hexadecimal expansion is *3A*, where I don't know the * digits. What information does this give you about the decimal expansion?) -- Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne http://aghitza.org -- -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] random problem
Hi,
On Thu, Jul 26, 2012 at 7:40 PM, robin hankin hankin.ro...@gmail.com wrote:
I am trying to generate random numbers and am running into roundoff
problems:
RealDistribution('uniform', [1,1+1/10^16]).get_random_element()-1
This returns zero every time for me, something that is almost surely wrong.
I would expect a number chosen from the interval (0,1e-16).
How do I make sage do what I want?
Does this help?
sage: R = RealField(100)
sage: R.random_element(1, 1+1/10^16)
1.745276341034
sage: R.random_element(1, 1+1/10^16)
1.899962307929
and so on. Note that if you try to use RR (which is the same as
RealField(53)) you run into the same precision/roundoff problem as you
had before. Hence the need to increase the working precision.
Also note that R.random_element() can only do uniform distribution, so
if you were hoping for something fancier this won't help.
--
Best,
Alex
--
Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne
http://aghitza.org
--
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Re: [sage-support] Generator of Finite Field
Hi, On Mon, May 21, 2012 at 9:29 AM, Oleksandr Kazymyrov vrona.aka.ham...@gmail.com wrote: I have encountered the following problem In Sage 5.0: sage: R.x=ZZ[] sage: k=GF(2^8,name='a',modulus=x^8+x^4+x^3+x+1) sage: k(ZZ(3).digits(2)) a + 1 sage: k.gen()^ZZ(k(ZZ(3).digits(2)).log_repr()) a sage: k.gen()^ZZ(k(ZZ(3).digits(2)).log_repr()) == k(ZZ(3).digits(2)) False sage: k(a+1)^ZZ(k(ZZ(3).digits(2)).log_repr()) == k(ZZ(3).digits(2)) True It easy see that k.gen() or k.multiplicative_generator() is not a generator of the finite field: sage: k.multiplicative_generator() a^4 + a + 1 Why is it clear that a^4+a+1 is not a multiplicative generator? I think it is: sage: k.a = GF(2^8, names='a', name='a', modulus=x^8+x^4+x^3+x+1) sage: (a^4+a+1).multiplicative_order() 255 Indeed, so is a+1: sage: (a+1).multiplicative_order() 255 The docs for multiplicative_generator() say: return a generator of the multiplicative group, then add Warning: This generator might change from one version of Sage to another. -- Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne http://aghitza.org -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] exact vs approximate values
Hi, On Sat, Aug 27, 2011 at 11:29 PM, Dan Aldrich daldr...@earthlink.net wrote: Can the user control either to print an approximate value or an exact value? I tried to print the value of an integral under a bell curve: integrate(e^((-x^2)), x, -3, 3) In addition to Simon's response, if you just want to perform a numerical integral (instead of a symbolic one, from which you then try to extract a number), you can use: sage: numerical_integral(e^(-x^2), -3, 3) (1.7724146965190428, 1.9677756052594506e-14) It returns a pair of real numbers. The first is a numerical approximation to the value of the integral, and the second is an upper bound on the error of this approximation. Type sage: numerical_integral? to find out more about this. Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- http://aghitza.org -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Testing if polynomial is in ideal
On Mon, 6 Sep 2010 20:42:43 -0700 (PDT), Cary Cherng cche...@gmail.com wrote: Given p_i and q in Q[x_1,...,x_n] I want to see if q is in the ideal (p1,...,pm). Does sage have easy support for this? Is this what you're looking for: sage: R.x, y = QQ[] sage: I = R.ideal(x^2, y) sage: x^2*y+y^2 in I True sage: x in I False Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Those cookies again...
On Sat, 21 Aug 2010 19:12:49 -0700 (PDT), kcrisman kcris...@gmail.com wrote: Sysadmin has found possible workaround of deleting history of the browser. This is fine in a lab, but potentially very crippling for those of us who rely on auto-completion of often-visited sites. Sysadmin is also very unlikely to try 4.5.2 VMWare image after recent reports of it not being so hot, though I think those may have been exaggerated - and anyhow he has a lot to do with the start of classes. I'd say the only way you will know whether 4.5.2 works for you is to try it out. The vmware image gets downloaded *a lot* (200 times in the first 5 days), and as far as I know there were only two problems reported with it: * unable to access the notebook from the host machine on Windows (this works for me on Mac OS X, and I don't have a Windows machine to test on -- someone suggested a workaround on the list but we haven't heard the original poster confirm that it fixed his problem) * request for having R installed with image support; I will look into this for 4.5.3, but if this is likely to be important to you, you can just install the ubuntu libraries in your copy of the virtual machine So, I'm not saying that the 4.5.2 vmware image is perfect, but I'm not convinced it's any worse than 4.3, and once again, you can find out whether it works for you by trying it out. Try it out on your computer first and see if the cookies issue is fixed, and then see if your system administrator is willing to give it a shot. Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Error installing cadabra.spkg
On Fri, 20 Aug 2010 17:29:52 -0500, Oscar Gerardo Lazo Arjona algebraicame...@gmail.com wrote: Hello people! I came across this problem while trying to install an spkg: checking pcre.h presence... no checking for pcre.h... no configure: error: Need the pcre library; get it from http://www.pcre.org/ . Make sure to set CPPFLAGS if necessary. make: *** No se especificó ningún objetivo y no se encontró ningún makefile. Alto. make: *** No hay ninguna regla para construir el objetivo `install'. Alto. real0m5.867s user0m2.736s sys0m2.916s sage: An error occurred while installing cadabra-0.115 Please email sage-devel http://groups.google.com/group/sage-devel explaining the problem and send the relevant part of of /home/oscar/sage-4.5.2/install.log. Describe your computer, operating system, etc. If you want to try to fix the problem yourself, *don't* just cd to /home/oscar/sage-4.5.2/spkg/build/cadabra-0.115 and type 'make check' or whatever is appropriate. Instead, the following commands setup all environment variables correctly and load a subshell for you to debug the error: (cd '/home/oscar/sage-4.5.2/spkg/build/cadabra-0.115' '/home/oscar/sage-4.5.2/sage' -sh) When you are done debugging, you can type exit to leave the subshell. But I do have pcre installed on my ubuntu 10.04 system. If I type man pcre I get a man page for perl compatible regular expressions, but if I type pcre I get a pcre: command not found I don't have a way to test this right now, but it looks very much like the usual Ubuntu package thing where the header files are in the *-dev package. In your case, I would try installing libpcre3-dev and see if it helps (it does include pcre.h, for instance). Note also that pcre is a library so there is no pcre executable to run. Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Sheaf Cohomology Calculations
Hi, On Tue, 10 Aug 2010 13:52:09 -0700 (PDT), abak anthony@gmail.com wrote: How do I do sheaf cohomology calculations on a variety described as a complete (or local complete) intersection in P^n. I can define the variety by (for example): P5, x = ProjectiveSpace(5, QQ).objgens() X = P5.subscheme([x[0]^2 + x[1]^2 + x[2]^2 + x[3]^2 + x[4]^2, 2*x[0]^2 + x[1]^2 + 3*x[2]^2 + 4*x[3]^2 + 5*x[4]^2]) What comes next? Unfortunately, Sage does not do sheaf cohomology yet. Macaulay2 should be able to do this; you can have a look at http://www.math.uiuc.edu/Macaulay2/doc/Macaulay2-1.3.1/share/doc/Macaulay2/Macaulay2Doc/html/_coherent_spsheaves.html and related pages, and if that does not help, ask on the Macaulay2 mailing list, see http://groups.google.com/group/macaulay2 Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] VMware memory allocation: how to change it with version 4.5.2?
Hi, On Wed, 11 Aug 2010 10:02:03 -0700 (PDT), Rolandb rola...@planet.nl wrote: But there is a difference with (for instance) Sage 4.1. With Sage 4.1 I could change the memory allocation via the option VM Settings. With Sage 4.5.2. the allocation is only 512Mb, and can't be changed. Any solution at hand? Thanks in advance! Here is a little experiment I ran: I just tried to change the RAM allocation for the latest vmware image, and could not. At the top of the corresponding settings window, vmware tells me: Disabled items cannot be changed until the virtual machine is powered off. To make these changes, first resume the virtual machine and then shut it down. In other words, one cannot change the RAM allocation for a virtual machine that is currently running or suspended, but only for machines that are powered off. I powered mine off and was able to change the settings. Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: 4.5.1 or 4.5.2 for win?
Hi, On Sun, 8 Aug 2010 00:16:34 -0700 (PDT), Rolandb rola...@planet.nl wrote: There is a (huge) difference between win version 4.5.1 and 4.5.2. In version 4.5.1 an external network was setup, so I can use Sage via Windows Firefox using the address 192.168.236.128. The 4.5.2 version gives the warning that an external network was not setup. Is there an easy way to solve this? Thanks in advance! The short answer is: I don't know. Going from 4.5.1 to 4.5.2, I made no changes to either the Ubuntu operating system that powers the virtual machine, nor to the settings of the virtual machine itself. The only thing that changed was the folder sage, which now contains sage-4.5.2 instead of sage-4.5.1. I also tested the image on my laptop (which runs Mac OS X, not Windows, but that should not matter), and I can use the host's web browser to access the virtual machine's Sage notebook without any problems. So that's why I don't know what's going on at your end. The best I can do at the moment is to suggest renaming the sage-vmware folder and starting over from sage-vmware-4.5.2.zip (if you still have it). Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] 4.5.1 or 4.5.2 for win?
Hi, On Sat, 7 Aug 2010 12:37:16 -0700 (PDT), Rolandb rola...@planet.nl wrote: I'm thrilled that a new VMware version is out. But looking at METALINK, I found version 4.5.2 for win while other versions are 4.5.1? See www.sagemath.org/mirror/win/meta/sage-vmware-4.5.2.zip. Sage 4.5.2 was just released. I had some insider information and obtained the final tar while it was still being tested on some platforms, and built it into vmware. Thus the somewhat unusual situation of sage-vmware-4.5.2 preceeding the official release by half a day or so. So it should be fine to use the sage-vmware-4.5.2 that's up now. Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: why does constructing this ring take forever?
On Wed, 7 Jul 2010 01:56:29 -0700 (PDT), Simon King simon.k...@nuigalway.ie wrote: On 7 Jul., 09:48, luisfe lftab...@yahoo.es wrote: ... So, the time in constructing the PolynomialRing is in fact checking if 16219299585*2^16612 - 1 is a proven prime. ... which means that the user should be given the opportunity to *assert* that the number is prime (or non-prime). ... and Ctrl-C should be allowed to stop this. I tried this out, then pressed Ctrl-C and had to go to the office. It was still going more than 6 hours later. Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Is there any way to get old VMware versions?
On Mon, 19 Apr 2010 18:04:13 -0700, William Stein wst...@gmail.com wrote: I have now posted a brand new VMWare Sage-4.4 image: http://boxen.math.washington.edu/home/wstein/binaries/sage-vmware-4.4.alpha0.zip It's something I made from scratch using a different approach than before. Please try it out and let me know if it works at all for you. Hi William, I'd like to know what's involved in making a VMWare Sage image like the one you mentioned above (and which is available for download from the Sage web page). I'm asking because we'll have to install Sage in our computer labs (Windows only) and I'd like to use something more recent than 4.4.alpha0. Thanks, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: zeros of the Riemann zeta function
On Tue, 8 Jun 2010 12:33:38 +0100, Anne Driver annedrive...@gmail.com wrote: Yes, I did read the documentation. It says it returns the imaginary part. But there is no I - just a real number. As such I believe at the *very least * the documentation should say it returns the imaginary part as a real number. Better still is to return the imaginary part with an I in front of it. I don't have strong opinions about the matter, but I'd like to point out that the imaginary part of a complex number *is* just a real number (if z = x + i*y, the imaginary part is y, without the i). So the documentation is correct about this. Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: Testing if something is an instance of FreeModule
On Sat, 29 May 2010 04:26:31 -0700 (PDT), John Cremona john.crem...@gmail.com wrote: Does the function is_FreeModule() do what you want by any chance? And if it does and you don't want to see the deprecation warnings all the time: sage: from sage.modules.all import is_FreeModule sage: is_FreeModule(x) False Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: power series bug?
On Tue, 18 May 2010 12:21:57 -0700 (PDT), John Cremona john.crem...@gmail.com wrote: I think it is a bug. sage: p.prec() 1 sage: p(t).prec() +Infinity sage: p(t^2).prec() +Infinity The precision of the composite is not being computed correctly. I hope someone more familiar with the power series code will jump in at this point. This type of thing has been noticed before (a couple of times!), see http://trac.sagemath.org/sage_trac/ticket/3979 http://trac.sagemath.org/sage_trac/ticket/5367 I guess it might be time to fix these :) Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] projective duality for plane curves?
On Tue, 27 Apr 2010 21:11:58 -0700, Ursula Whitcher urs...@math.hmc.edu wrote: I'm playing with a family of plane curves with rational coefficients in the complex projective plane. So rational or complex numbers would be enough for me to test examples. In a perfect world I'd be able to specify a family using rational functions of arbitrary constants (something like a x^2 + b/(a-1) y^2), and compute the projective dual in terms of those constants. That sounds good. This request is being tracked at: http://trac.sagemath.org/sage_trac/ticket/8801 P.S.: The example you gave is a conic. Is the family of plane curves you are working with a family of conics? If so, you might be able to use the explicit formula for the dual of a general conic from page 712 in Bashelor, Ksir, Traves - Enumerative algebraic geometry of conics, The American Mathematical Monthly, vol. 115, no. 8, October 2008, pages 701--728. Otherwise, we'll hopefully get a chance to implement the general case soon. Best, Alex UAW -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] projective duality for plane curves?
On Tue, 27 Apr 2010 16:15:24 -0700 (PDT), Ursula Whitcher urs...@math.hmc.edu wrote: Can Sage compute the projective dual of a plane curve? Not at the moment. I'll open an enhancement ticket for this as a requested feature. It looks like an interesting problem. What kind of base rings do you care about? Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] ¡RuntimeError: Unable to determi ne branch?!
Hi, On Sat, 24 Apr 2010 20:26:33 -0700 (PDT), Yonatan yzuletaoc...@gmail.com wrote: *Debian lenny 5.0.4 *Linux kernel 2.6.26-2-686 *gnome 2.22.3 *sage-4.3.5-linux-32bit-debian_5.0-i686-Linux (version that i have. I downloaded it form official page: sage-4.3.5-linux-32bit-debian_5.0- i686-Linux.tar.lzma) I can't to load any library of sage (i am a new user of sage). i write ./sage and: *** *** sh: -c: line 0: unexpected EOF while looking for matching ``' sh: -c: line 1: syntax error: unexpected end of file --- RuntimeError Traceback (most recent call last) /home/kinichi/Deb`s/sage-4.3.5-linux-32bit-debian_5.0-i686-Linux/ local/ This is just a shot in the dark, but I think the problem might be that the directory where you put sage has a ` character in it. Can you try to rename the directory Deb`s to something else like Debs and try again? Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: reset()
On Mon, 19 Apr 2010 13:09:34 +0200, bb bblo...@arcor.de wrote: Tnx! Is there any explanation why the magic ends with del ? sage: del x sage: x --- NameError Traceback (most recent call last) /home/bb/sage-4.3.5/local/lib/python2.6/site-packages/sage/all_cmdline.pyc in module() NameError: name 'x' is not defined sage: So the feature theses fits like a glove? A very popular feature is introspection. In this particular case, doing sage: reset? would tell you what reset does: Delete all user defined variables, reset all globals variables back to their default state, and reset all interfaces to other computer algebra systems. The feature that Harald was referring to is that x is a predefined global variable. You know this by doing sage: globals()['x'] x So now we know what the Sage function reset does. del, on the other hand, is a Python builtin function. Googling del python gives that del can also be used to delete entire variables. So del x deletes the global variable from globals(): sage: del x sage: globals()['x'] --- KeyError Traceback (most recent call last) /home/ghitza/ipython console in module() KeyError: 'x' But if you reset again, x is back: sage: reset sage: globals()['x'] x And everything is behaving exactly as the docstrings indicate. Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Yamanouchi words
I'm cc-ing this to sage-combinat-devel since they might have a better idea about this. Alex On Tue, 13 Apr 2010 21:47:09 -0700 (PDT), Drini pdsanc...@gmail.com wrote: I'm confused about http://www.sagemath.org/doc/reference/sage/combinat/yamanouchi.html it's documentation for 4.3.5 but it's been the same since 4.3.1 Is there a class? functions? or is it just a random note about those words? -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org To unsubscribe, reply using remove me as the subject.
Re: [sage-support] strange n()
On Sat, 10 Apr 2010 01:08:12 -0700, Mike Hansen mhan...@gmail.com wrote: On Sat, Apr 10, 2010 at 1:02 AM, bb bblo...@arcor.de wrote: Is there any explanation? Could you be more specific in your question? Everything there looks normal to me. n(pi, 20) means to compute using 20 bits of precision. ... which you can figure out from the first two lines of the docstring for n, by typing n? at the Sage prompt :). Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org To unsubscribe, reply using remove me as the subject.
Re: [sage-support] Why does my little program bring my department's server to its knees?
Hi, On Wed, 3 Mar 2010 08:08:13 -0800 (PST), Ben Linowitz benjamin.linow...@gmail.com wrote: I wrote a little program which almost brought my department's server down and would like to know why. Here is a brief description of the program [I can reproduce the actual code if necessary]: That would indeed be helpful. By the way, the version of sage on the server is: SAGE Version 3.1.2, Release Date: 2008-09-19 My computer tells me that today's date is 2010-03-04. The latest version of Sage is 4.3.3. That could very well be the issue :) If you can, try to get sage-4.3.3 and run your code again. Judging from your email, I guess that your department's server runs Debian or Ubuntu, and it has the distribution's (very very old) version of Sage installed. You could try to convince your system administrator to get the latest version of Sage and install it (it would have to be a binary from sagemath.org or building from source, since there isn't a more recent Debian package). If that's difficult, you can always put Sage into your own home directory (if your disk quota allows it). If you post your full code here then someone else could run it on sage-4.3.3 and report on their findings. Either it will work well, which would give you a good argument to get your sysadmin to upgrade; or it will bring somebody else's server down, in which case there's probably some bug to fix. Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: Solve fails for a cubic
On Tue, 2 Mar 2010 05:27:45 -0800 (PST), Sharpie ch...@sharpsteen.net wrote: Thanks for the reply Alex. I think I understand that by choosing a variable of the appropriate type, in this case one that is restricted to the real numbers, the roots can be determined in a straight-forward manner. The way I see it, it is not actually a question about the variable representing a real number; it is more a question of using polynomials and their specialised built-in roots() method rather than symbolic functions and the general-purpose solve(). I had some more problems, but finally figured out how to coerce a expression of type symbolic to the real ring through a somewhat convoluted application of multiplication, full_simplify() and polynomial(). The cubic is the result of balancing a system of conservation equations and then substituting in known information: y2 = var( 'y2' ) f = 1.54027132807289 == y2 + 0.0906104881640050/y2^2 + 0.150 # Multiply to eliminate fractions. f = f * y2^2 f.full_simplify().polynomial(RR).roots() [(-0.236040904804615, 1), (0.286518993973450, 1), (1.33979323890405, 1)] There might be an elegant way of doing this with symbolics, but I don't know it. However, if I move everything to one side of the == sign, your f is a rational function (quotient of polynomials with real coefficients). So my approach would be: sage: R.y2 = RR[] # polynomials in y2 with real coefficients sage: f = y2 + 0.0906104881640050/y2^2 + 0.150 - 1.54027132807289 sage: f.numerator().roots() [(-0.236040904804615, 1), (0.286518993973450, 1), (1.33979323890405, 1)] Note that the first line tells Sage what y2 is: the variable in a polynomial ring with real coefficients. Then when you define f, Sage automatically knows that f is a rational function (in particular, it's not an element of R, but of the fraction field of R: sage: parent(f) Fraction Field of Univariate Polynomial Ring in y2 over Real Field with 53 bits of precision ) Anyway, I think it would make perfect sense to be able to just do f.roots() for a rational function and have this return the roots of the numerator, so that would make this a bit nicer. For that matter, I think that for a rational function f we should have both f.zeroes() and f.poles() (and maybe also f.divisor()), and have f.roots() be an alias for f.zeroes(). And again, maybe there should be a nice way of doing this within symbolics and somebody else can comment on this. Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Solve fails for a cubic
On Sun, 28 Feb 2010 23:02:08 -0800 (PST), Sharpie ch...@sharpsteen.net wrote: However, tonight I have been trying to solve an open channel flow problem which requires me to find the roots of: y^3 - 1.39027132807289 * y^2 + 0.090610488164005 == 0 find_root() does return the correct answers-- but in this case both positive roots are of interest so it would be nice to recover them both at the same time. Hi, How about this: sage: R.y = RR[] sage: f = y^3 - 1.39027132807289 * y^2 + 0.090610488164005 sage: f.roots() [(-0.236040904804615, 1), (0.286518993973450, 1), (1.33979323890405, 1)] Is this what you were hoping for? Best, Alex -- Alex Ghitza -- http://aghitza.org/ Lecturer in Mathematics -- The University of Melbourne -- Australia -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: WTF
On Wed, 17 Feb 2010 19:44:52 -0800 (PST), D.C. Ernst ernst.tr...@gmail.com wrote: If anyone is interested, they are welcome to see (and use) the finished product which is linked to from here: http://ma4140.wikidot.com/sage:sage-lab-1 The lab is meant to be an introduction to Sage for my abstract algebra students. If you take a look and notice an error or if you have any suggestions, please let me know. Dear Dana, Thanks for posting this, and I'm happy to hear that your worksheets are safe. I had a quick look at the intro, which is quite nice. Here are a few random comments: * Under What is Sage: take should be taken * one should also avoid using i and I as variables for the same obvious reason as for e * just a comment: I never used del(); in fact, I didn't know it existed before reading your intro (thanks!); I normally just define f to be the next thing I'm interested in. Actually, I don't know how to get information about del() in Sage; trying del? is not successful. * when I get to plot(1/t, ...) I get a NameError because t has not yet been defined; did you do this on purpose to get them to fix it? * for Divisibility of integers, you can also do something like q, r = 4357.quo_rem(3754) and get the quotient and the remainder in one go. * in Extended gcd, I think saying *the* values of r and s might mislead people into thinking that these values are uniquely determined; I would drop the the. Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: Sage Live CD (Alternativ based on Puppy Linux)
On Wed, 17 Feb 2010 21:06:51 -0800, Jeff Post j_p...@pacbell.net wrote: I'd love to test it. Please let us know when and from where the iso file can be downloaded anonymously. Yes, that's pretty annoying. I've gone through it, downloaded it and posted it at http://aghitza.org/misc/SageLivePupv02.iso Here is the md5sum to check if the download is ok: 359f63129d4f3993bd890e4029b4d98f I'll leave this up until a copy makes it onto the official Sage pages. Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: sagemath installs on ubuntu karmic, but abends on simple problem
On Mon, 15 Feb 2010 10:50:18 -0800, William Stein wst...@gmail.com wrote: -1 to the phone home idea. It might be good to warn of releases that are really old, but this won't help with the one already in Debian. - Robert Since we're voting, +1 to the phone home idea simply because I've received requests for this feature *frequently* when I give talks. It's really standard in just about all major software these days. People really want some easy automatic way to find out when a new version has been released and is ready for them to upgrade to. Note that some of the major software that does this also allows you to turn it off (I'm thinking of Firefox here). Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] sagemath installs on ubuntu karmic, but abends on simple problem
On Sat, 13 Feb 2010 16:27:22 -0800 (PST), Tom Roche tlro...@gmail.com wrote: summary: I installed ubuntu package=sagemath (and dependencies) using aptitude on 2 previously-sage-clean ubuntu karmic boxes. Sage appeared to install cleanly on both boxes, but a simple problem (that works on sagenb.org) causes sage to abend similarly on both boxes. How to fix the current installs, or reinstall more appropriately? The version of Sage that's currently packaged in Debian (and hence Ubuntu) is really really old (think: dinosaur). I suggest that you download an Ubuntu binary from www.sagemath.org This will give you Sage 4.3.2, the latest release. Another option is to download the sources and build it yourself. Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] using n.factor()
On Sun, 7 Feb 2010 15:17:08 -0800 (PST), davedo2 dave...@gmail.com wrote: I want to run a range of numbers through the factor() function and if I run a loop through a list as in: for i in [25,37,205]: print i.factor() it works fine, but if I try for i in range(1,5): print i.factor() I get the error message 'int' object has no attribute 'factor' - how do I get factor() to work with a range? Thanks...Dave range() returns Python integers, which do not have a factor() method. You need to get Sage integers instead, so use srange() or xsrange(): sage: srange(5) [0, 1, 2, 3, 4] sage: type(srange(5)[2]) type 'sage.rings.integer.Integer' sage: for i in srange(1, 5): print i.factor() 1 2 3 2^2 Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: polygon from list of points
On Thu, 4 Feb 2010 00:43:10 -0800 (PST), Nathann Cohen nathann.co...@gmail.com wrote: Could you be by any chance trying to compute the convex hull of a set of points ? In which case you would want to do for example: sage: poly = Polyhedron(vertices=[(0, 0), (3, 0), (0, 3), (1, 1)]) sage: poly A 2-dimensional polyhedron in QQ^2 defined as the convex hull of 3 vertices. sage: poly.vertices() [[0, 0], [3, 0], [0, 3]] Note that Sage realised that (1, 1) was in the interior and ignored it. There are a bunch of things you can do with your shiny new polygon now, here is what tab-completion gives me: sage: poly. poly.Hrep_generator poly.field poly.projection poly.Hrepresentation poly.gale_transform poly.pyramid poly.Vrep_generator poly.graph poly.radius poly.Vrepresentation poly.ieqs poly.radius_square poly.adjacency_matrixpoly.incidence_matrix poly.ray_generator poly.ambient_dim poly.inequalities poly.rays poly.bipyramid poly.inequality_generator poly.rename poly.bounded_edges poly.intersection poly.render_solid poly.categorypoly.is_compact poly.render_wireframe poly.cdd_Hrepresentation poly.is_simple poly.reset_name poly.cdd_Vrepresentation poly.line_generator poly.save poly.center poly.linearities poly.schlegel_projection poly.db poly.lines poly.show poly.dim poly.lrs_volume poly.simplicial_complex poly.dumppoly.n_Hrepresentation poly.triangulated_facial_incidences poly.dumps poly.n_Vrepresentation poly.union poly.edge_truncation poly.n_equations poly.version poly.equation_generator poly.n_facets poly.vertex_adjacencies poly.equations poly.n_inequalities poly.vertex_adjacency_matrix poly.f_vectorpoly.n_lines poly.vertex_generator poly.face_latticepoly.n_rays poly.vertex_graph poly.facet_adjacency_matrix poly.n_vertices poly.vertex_incidences poly.facial_adjacencies poly.polar poly.vertices poly.facial_incidences poly.prism Feel free to explore these and ask more questions. Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: Cannot run Sage
On Tue, 2 Feb 2010 09:16:52 -0800 (PST), Drini pdsanc...@gmail.com wrote: Is it still up? If not, a fix is available somewhere? I just ran into this problem (arch 32bit also) today Yes, try http://modular.math.jmu.edu/linux/32bit/sage-4.3.1-fat-archlinux-i686-Linux.tar.lzma (Other mirrors might have it as well by now.) Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Cannot run Sage
On Sat, 30 Jan 2010 18:01:45 +1100, Alex Ghitza aghi...@gmail.com wrote: I will make a new binary distribution and upload it somewhere, and I'll send you the link when that's done. It's basically done; I am getting it compressed with lzma right now, so it should be ready in about 30 minutes, and available at http://sage.math.washington.edu/home/ghitza/sage-archlinux-32bit-4.3.1-i686-Linux-gcc-4.4.3.tar.lzma Best, Alex On Sat, 30 Jan 2010 10:21:45 +0700, A. Akbar Hidayat keri...@gmail.com wrote: Hi guyz... im using the binary version of sage for Arch Linux. However, when i run sage, i got a long error message. I post the error message on the attachment. I was able to use sage before, without any error. But the error occured this morning. so im actually confused why i got the error. -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Cannot run Sage
18
19 def is_RingHomset(H):
/media/data/sage-4.3.1-archlinux-32bit-i686-Linux/local/lib/python2.6/site-packages/sage/rings/quotient_ring.pyc
in module()
30 import commutative_ring
31 import ideal
--- 32 import sage.rings.polynomial.multi_polynomial_ideal
33 import sage.structure.parent_gens
34 from sage.interfaces.all import singular as singular_default,
is_SingularElement
/media/data/sage-4.3.1-archlinux-32bit-i686-Linux/local/lib/python2.6/site-packages/sage/rings/polynomial/multi_polynomial_ideal.py
in module()
227 from __future__ import with_statement
228
-- 229 from sage.interfaces.all import (singular as singular_default,
230 macaulay2 as macaulay2_default,
231 magma as magma_default)
/media/data/sage-4.3.1-archlinux-32bit-i686-Linux/local/lib/python2.6/site-packages/sage/interfaces/all.py
in module()
6
7 from expect import is_ExpectElement
8 from gap import gap, gap_reset_workspace, gap_console, gap_version,
is_GapElement, Gap
9 from genus2reduction import genus2reduction, Genus2reduction
10 from gfan import gfan, Gfan
/media/data/sage-4.3.1-archlinux-32bit-i686-Linux/local/lib/python2.6/site-packages/sage/interfaces/gap.py
in module()
985 #print Automatically updating the cached Gap workspace:
986 #print WORKSPACE
-- 987 gap_reset_workspace(verbose=False)
988
989 # Delete all gap workspaces that haven't been used in at least 1
/media/data/sage-4.3.1-archlinux-32bit-i686-Linux/local/lib/python2.6/site-packages/sage/interfaces/gap.py
in gap_reset_workspace(max_workspace_size, verbose)
976 pass
977 # end for
-- 978 g.eval('SaveWorkspace(%s);'%WORKSPACE)
979
980
/media/data/sage-4.3.1-archlinux-32bit-i686-Linux/local/lib/python2.6/site-packages/sage/interfaces/gap.py
in eval(self, x, newlines, strip, **kwds)
478 input_line += ';'
479
-- 480 result = Expect.eval(self, input_line, **kwds)
481
482 if not newlines:
/media/data/sage-4.3.1-archlinux-32bit-i686-Linux/local/lib/python2.6/site-packages/sage/interfaces/expect.pyc
in eval(self, code, strip, synchronize, locals, **kwds)
981 try:
982 with gc_disabled():
-- 983 return '\n'.join([self._eval_line(L, **kwds) for L in
code.split('\n') if L != ''])
984 except KeyboardInterrupt:
985 # DO NOT CATCH KeyboardInterrupt, as it is being caught
/media/data/sage-4.3.1-archlinux-32bit-i686-Linux/local/lib/python2.6/site-packages/sage/interfaces/gap.py
in _eval_line(self, line, allow_use_file, wait_for_prompt)
683 try:
684 if self._expect is None:
-- 685 self._start()
686 E = self._expect
687 #import pdb; pdb.set_trace()
/media/data/sage-4.3.1-archlinux-32bit-i686-Linux/local/lib/python2.6/site-packages/sage/interfaces/gap.py
in _start(self)
360 self._session_number = n
361 return
-- 362 raise RuntimeError, msg
363
364 if self.__use_workspace_cache and self.__make_workspace:
RuntimeError: Unable to start gap
Error importing ipy_profile_sage - perhaps you should run %upgrade?
WARNING: Loading of ipy_profile_sage failed.
--
Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne
-- Australia -- http://www.ms.unimelb.edu.au/~aghitza/
--
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Re: [sage-support] NIST elliptic curves in the Cremona database?
Hi Alasdair, My initial reaction is to point out that the NIST elliptic curves are over finite fields, while the Cremona database contains elliptic curves over the rational numbers. I don't see why we couldn't have a database with the NIST recommended elliptic curves available in Sage, though. Best, Alex On Thu, 21 Jan 2010 16:13:38 -0800 (PST), Alasdair amc...@gmail.com wrote: I'm trying to find out if the NIST recommended elliptic curves (appendix to http://csrc.nist.gov/publications/fips/fips186-3/fips_186-3.pdf) are in the Cremona database. I can't seem to find anything online; does anybody here know? Thanks, Alasdair -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] NIST elliptic curves in the Cremona database?
On Thu, 21 Jan 2010 16:36:47 -0800, William Stein wst...@gmail.com wrote: Aren't those curves owned by some company though, and one can't use them without paying license fees? I can't believe I just wrote that sentence. There's some info at http://en.wikipedia.org/wiki/ECC_patents It doesn't seem to indicate that the curves themselves are under patent, and it would seem wrong for a government institution such as NIST to recommend curves for which license fees must be paid. (Of course just because it seems wrong doesn't mean that it's not the case.) The ECC algorithms themselves are a more contentious matter. RSA thinks that the original algorithms due to Koblitz-Miller are not under patent, but that certain implementation techniques and newer algorithms are, see http://www.rsa.com/rsalabs/node.asp?id=2325 Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Problem installing sage on ArchLinux.
On Mon, 4 Jan 2010 03:03:32 -0800 (PST), Harald Schilly harald.schi...@gmail.com wrote: On Jan 4, 1:16 am, Alex Ghitza aghi...@gmail.com wrote: I finished creating binaries for 32-bit and 64-bit Archlinux... Hi, should I upload these to the mirror or do you try again with the fat binaries option? I'll try the fat binaries option, and if that works I'll upload the two files to sage.math. It might take 12 hours or so because I'm about to go to bed now, so if something goes wrong I won't know until the morning. Anyway, I'll email you when I'm done. Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Problem installing sage on ArchLinux.
On Mon, 4 Jan 2010 03:03:32 -0800 (PST), Harald Schilly harald.schi...@gmail.com wrote: On Jan 4, 1:16 am, Alex Ghitza aghi...@gmail.com wrote: I finished creating binaries for 32-bit and 64-bit Archlinux... Hi, should I upload these to the mirror or do you try again with the fat binaries option? OK, the fat binaries are now on sage.math: http://sage.math.washington.edu/home/ghitza/sage-4.3-linux-archlinux-fat-i686-Linux.tar.lzma and http://sage.math.washington.edu/home/ghitza/sage-4.3-linux-archlinux-fat-x86_64-Linux.tar.lzma Thanks, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Problem installing sage on ArchLinux.
On Sun, 3 Jan 2010 01:09:00 -0800 (PST), Eugene Goldberg omegat...@gmail.com wrote: I've got two computers with archlinux (i686 and x86_64 versions) and on both machines there is same problem installing sage: $make File /home/ajunta/Binary/sage-4.3-linux-Ubuntu_9.10-x86_64-Linux/ local/lib/python2.6/site-packages/sage/interfaces/gap.py, line 362, in _start raise RuntimeError, msg RuntimeError: Unable to start gap could you please advice what is wrong with it? Hi, It looks like you're trying to install from the binaries for Ubuntu, is that correct? I have never tried that, but I wouldn't be suprised if it didn't work, since archlinux and ubuntu aren't really that close. One of these days I will find out how to make binaries and I'll produce 32 and 64 bit binaries for archlinux. Until then, I suggest you download the source code for Sage and build it yourself. It is a bit on the long side (a few hours), but it should work pretty well. After you download sage-4.3.tar, untar it and look at the README.txt file. It's not quite up to date, but it's pretty good. In particular, Arch Linux is listed as unsupported, but several people have been building Sage on it for a while and it works fine. Before you start the build, make sure you have the prerequisites -- to those listed in README.txt, you have to add gcc-fortran. You also need to set the environment variables SAGE_FORTRAN and SAGE_FORTRAN_LIB as described in README.txt. Good luck, and let us know if you have any more problems. PS: After writing the above, I noticed that Sage 4.3 is actually packaged in AUR, both as source (sage-mathematics) and as binary (sage-mathematics-bin). So that could be another option. (But I still think that the easiest and most robust way is to build from source.) Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Problem installing sage on ArchLinux.
On Sun, 03 Jan 2010 20:47:37 +1100, Alex Ghitza aghi...@gmail.com wrote: One of these days I will find out how to make binaries and I'll produce 32 and 64 bit binaries for archlinux. Sorry to be replying to myself. I read through the rest of README.txt (for the first time ever, I guess), and saw the section on creating binaries for redistribution. I'll try that and report back. Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Modular Symbols and irregular cusps
Hi Kilian, I am forwarding this to the sage-nt mailing list as well since you might get a larger audience. Best, Alex On Sun, 3 Jan 2010 13:51:19 -0800 (PST), Kilian kkil...@googlemail.com wrote: Hello, i have a problem with sage and modular symbols for Gamma1(4) and odd weight k, where the cusp 1/2 is irregular. According to Merel, there is (for k2) an exact sequence: 0- S_k - M_k - B_k - 0 Here B_k is the boundary space and S_k is the cuspidal subspace. Let the weight k be 7. If I compute the appropriate dimensions with SAGE, I get 4,6 and 3 which can't be. Furthermore, computing the boundary map, gives a matrix which is definitely _not_ surjective. On the other hand, Merel explicitely states that the dimension of B_k is the number of cusps, i.e. 3, so the failure must already be in Merel's paper, or am I missing something? I assume that 4 and 6 are correct, as a comparison with the usual dimension tables for modular forms suggest. What is even more confusing is that Merel states that the isomorphism between the boundary space and the space B_k(Gamma) is an _isomorphism_, whereas in the SAGE sourcecode and in William Stein's book it is only stated that it's injective. Thanks in advance, Kilian. -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: Problem installing sage on ArchLinux.
On Sun, 3 Jan 2010 06:30:15 -0800 (PST), Eugene Goldberg omegat...@gmail.com wrote: Thanks for the advice, I had some problems building previous version of sage, and like that one - it solved by building sage from source. I guess building from source is the best way to avoid many problems. Glad to hear it worked. I finished creating binaries for 32-bit and 64-bit Archlinux, and they are now at http://sage.math.washington.edu/home/ghitza/sage-4.3-linux-archlinux-i686-Linux.tar.lzma and http://sage.math.washington.edu/home/ghitza/sage-4.3-linux-archlinux-x86_64-Linux.tar.lzma Harald, can you put these on the Linux binaries page? I will try to keep producing these for the next releases. Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: Problem installing sage on ArchLinux.
On Sun, 3 Jan 2010 16:46:07 -0800, William Stein wst...@gmail.com wrote: 1. I already produce 64-bit binaries (which should be posted). OK. They're not appearing in the binary-Linux-64 bit directory, at least on the mirrors that I looked at. 2. Did you set export SAGE_FAT_BINARY=yes No, I didn't because of the warning in README.txt. I can do it in the future, though. Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Fwd: sage q
Note also that there is not just one but many embeddings of GL(8, GF(2)) into GL(10, GF(2)), and I'm not convinced that any of them is more natural than the others -- there is even more than one diagonal embedding. So I'm not sure this is a well-defined question (but maybe I'm misinterpreting what Ciaran was saying). Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: Running Sage remotely via a web browser: How?
On Tue, 22 Dec 2009 10:26:41 -0800 (PST), rvaug...@gmail.com rvaug...@gmail.com wrote: However: I'm obviously not crazy about running my machine w/ the firewall disabled. Is there a way to config the firewall such that the firewall is enabled AND Sage can be run remotely? Possibly specify WWW (HTTP) and/ or Secure WWW (HTTPS) as Trusted Services? System-level configuration is not uniform across Linux distributions, so without knowing what particular distribution you are using it is hard to give you precise advice. For instance, my distribution is Archlinux, and I just use the simple host access control specified by /etc/hosts.allow and /etc/hosts.deny. The syntax of these is fairly simple and man hosts.allow tells me all about it. I would for instance put in /etc/hosts.deny: ALL: ALL to deny all requests by default, together with in /etc/hosts.allow: SSHD: ALL to let all ssh login requests through. I don't need an elaborate firewall setup because this is just my laptop sitting on my behind a router that also only allows ssh through. Someone running a Linux server might use iptables to set up a proper firewall with more complicated rules. So what I would do in your situation is to find out what firewall software is enabled on your machine and then google XYZ ABC configuration, where XYZ is your Linux distribution and ABC is the firewall software. Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: An abbreviation for lambda?
On Mon, Dec 14, 2009 at 10:31:14PM +0100, Jaap Spies wrote: Martin Rubey wrote: Carlos Córdobaccordob...@gmail.com writes: Anyway, the use of anonymous functions is mostly useful on constructs that operate over lists, like map and reduce. In 10 years of using Mathematica I've ever needed to derive this kind functions, but nevertheless I've checked if it's possible, and indeed it is, for example D[(#^2)[x], x] gives 2*x. I don't think that this implies that anonymous functions are symbolic, since (#^2)[x] gives already x^2. MMA's evaluation rules are tricky though, I do not know whether D evaluates all it's arguments before calling. I truly hope this 'hocus pocus' will never make it in Sage! Jaap The whole discussion started with a suggestion for making the lambda notation more mathematician-friendly (by making it closer to mathematical notation). Based on this, two comments: 1. I agree with Jaap that Mathematica's notation is by far less human-friendly than the Python lambda. It's really obscure. Maybe it makes sense when viewed as part of Mathematica's syntax, but it would look really ugly and weird in Sage. So, please no! 2. Going back to the original suggestion, which was to use -: that's not actually correct mathematical notation. The right one is closer to what Sage outputs (as Jason pointed out), i.e. x |- x^2 So if we're going to do anything in this direction, I would much prefer this to x - x^2 which is just plain wrong. Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] Re: Integer points of an elliptic curve
On Sun, Dec 06, 2009 at 04:23:35PM -0800, Jaakko Seppälä wrote: I tried this. Do I need include some package in Sage. I have sage3.0.5dfsg-4ubuntu1 installed via apt-get. I got this output Hi Jaakko, The version of Sage that's packaged in Debian in Ubuntu (3.0.5) is quite old by now. The current stable version is 4.2.1, and in the meantime there have been a lot of changes and additions, including to elliptic curves. I suggest that you download a recent Ubuntu binary from sagemath.org, or that you download the source code and build Sage yourself (this takes some time though). Definitely let us know if you're having any trouble installing a recent version, or if there are other features that you would like to have regarding elliptic curves. Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] weird error after starting Sage 4.2.1 in terminal
When I start sage-4.2.1, about 5 seconds after the sage: prompt appears, I get this: -- | Sage Version 4.2.1, Release Date: 2009-11-14 | | Type notebook() for the GUI, and license() for information.| -- sage: Traceback (most recent call last): File /home/ghitza/sage-devel/local/bin/sage-cleaner, line 108, in module while cleanup() 0: File /home/ghitza/sage-devel/local/bin/sage-cleaner, line 53, in cleanup if not e or (e and kill_spawned_jobs(spawned_processes, parent_pid)): File /home/ghitza/sage-devel/local/bin/sage-cleaner, line 75, in kill_spawned_jobs os.killpg(int(pid), 9) ValueError: invalid literal for int() with base 10: 'Cl\xd9\x02\x1f\x7fl' I have not run into this in previous versions. Has anyone else seen this? Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
Re: [sage-support] weird error after starting Sage 4.2.1 in terminal
On Fri, Nov 27, 2009 at 03:53:39PM -0800, William Stein wrote: I've never heard of this. The above could be caused by some file being corrupted. Delete $HOME/.sage/temp to get rid of this problem. Thanks, that did it. -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] [sage-edu] Re: Advice on adopting Sage in undergrad teaching?
On Tue, Nov 17, 2009 at 09:23:40PM +0100, Francois Maltey wrote: This calculus is maple-right but is user-discourteous. M = matrix ([[a,b],[c,d]]) 0*M = 0 with maple, and all other systems answer matrix([[0,0],[0,0]]) Even if you explain that for maple syntax, it's normal to get 0*A = 0 because the right way is evalm(0*M), I repeat : everyone thinks that 0*M = matrix 0, not number 0. This 0*XYZ=0 rule isn't fine. Only(?) an object language (as python) can treat this multi-sens of zero. I'm not sure I understand this paragraph. Mathematically, 0*M is always the zero matrix and never the number 0. So it seems to me that maple screws up if it returns the number 0. In Sage: sage: var(a b c d) (a, b, c, d) sage: M = matrix([[a,b],[c,d]]) sage: 0*M [0 0] [0 0] I have an other question : how can you easily verify this theorem in sage ? M = matrix([[a,b],[c,d]])# or an nxn matrix with any parameters... P = det (M - x*matrix ONE) # Call Cayley-Hamilton therem in France eval (P with x=M) answers matrix([[0,0],[0,0]]). Here is one way, I don't know if there's an easier one: sage: var(a b c d) (a, b, c, d) sage: M = matrix([[a,b],[c,d]]) sage: I = M.parent()(1) sage: P = lambda x: det(M - x*I) sage: P(M) 0 The two first methods I don't find in sage was : 1/ Sum as sum(q^k, k=0..N)=(1-q^(n+1))/(1-q) and sum(x^k/k!, k=0..+oo)=e^x This is in the works presently, wrapping Maxima's symbolic summation. It's ticket 3587, and might make it into sage-4.3: http://trac.sagemath.org/sage_trac/ticket/3587 2/ kernel over matrix is right, but I don't find the maple intbasis and sumbasis which build a basis for F cap G and F+G where the F and G subspaces are described by a list of vectors. You have to work with the objects in Sage (which in my opinion is good because students are forced to think about subspaces rather than lists of vectors): sage: V = VectorSpace(QQ, 5) sage: F = V.subspace([(0,1,2,3,4), (1,2,3,4,6), (0,1,0,1,0)]) sage: G = V.subspace([(1, 1, 0, 0, 0), (0, 1, 1, 2, 2), (5, 4, 3, 2, 1)]) sage: I = F.intersection(G) sage: I.basis() [ (1, 0, -1, -2, -2), (0, 1, 1, 2, 2) ] sage: S = F + G sage: S.basis() [ (1, 0, 0, -1, 0), (0, 1, 0, 1, 0), (0, 0, 1, 1, 0), (0, 0, 0, 0, 1) ] Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Advice on adopting Sage in undergrad teaching?
On Tue, Nov 17, 2009 at 01:52:58PM -0800, Simon King wrote: Hi Alex! On 17 Nov., 22:12, Alex Ghitza aghi...@gmail.com wrote: ... I'm not sure I understand this paragraph. Mathematically, 0*M is always the zero matrix and never the number 0. So it seems to me that maple screws up if it returns the number 0. I don't know whether maple returns the number 0. But even in Sage, although 0*M is a matrix and not a number, this matrix is equal to the number 0: sage: M = Matrix([[1,2],[3,4]]) sage: 0*M==0 True sage: type(0*M) type 'sage.matrix.matrix_integer_dense.Matrix_integer_dense' This is most likely because __cmp__ first coerces the right hand side (0) into the matrix space that the left hand side (0*M) lives in. I think that's fine, though? Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
[sage-support] Re: Sage upgrade
On Tue, Nov 10, 2009 at 01:27:18PM -0800, Mikie wrote: Simon, No, I haven't any upgrade. Could you tell explicitly what to do for the upgrade? Just type sage -upgrade and see what happens. Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Arch Linux and Sage
On Mon, Nov 09, 2009 at 05:49:40PM -0800, Josh wrote: I got the error when it attempted to compile R, 113 minutes into the process. Is this why I would have had to copy libgcc.so to the appropriate directory and if so, what directory? Here is where you have two options: 1. As William wrote in a previous message, do export SAGE_FORTRAN=/usr/bin/gfortran export SAGE_FORTRAN_LIB=/usr/lib/libgfortran.so This assumes you have gfortran installed on your system. If not, do pacman -S gcc-fortran Now if you run make there should be no problems with R any more. (Note that I haven't tried this option yet, but it should be the right way to go. It also has the advantage that you can do it at the very beginning, instead of having to wait until R fails.) 2. The other option (more of a hackish workaround) is to do cp /usr/lib/libgcc_s.so /opt/sage-4.2/local/lib/gcc-lib/i686-pc-linux-gnu/4.0.3/ and try make again. Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Arch Linux and Sage
On Sun, Nov 08, 2009 at 03:57:12PM -0800, William Stein wrote: On Sun, Nov 8, 2009 at 3:55 PM, Josh chaotixmonju...@gmail.com wrote: I was wondering what I am suppose to do with libreadline to get it to compile. Quoting from Tim's email: * Incompatible libreadline.so.6 -- the libreadline in Sage is dynamically linked to libtermcap. Arch Linux disables libtermcap, so one needs to copy the system's libreadline to $SAGE_ROOT/local/lib. This is also the case in binary distributions. Yep. On my system, when I get the sqlite error, I type cp /usr/lib/libreadline.so /opt/sage-4.2/local/lib/ and then make again. Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Arch Linux and Sage
I've been building Sage on 32-bit Archlinux for at least one year now. With 4.2, I only have two problems: the sqlite issue and the R issue. Thanks to previous threads on this sort of thing, I work around them by copying the system libreadline.so and libgcc.so to the appropriate places in the sage build directory. It's a bit annoying because as far as I can tell I have to wait for sqlite to fail before copying libreadline, and then for R to fail before copying libgcc. So the whole thing needs a bit too much of my attention. On the other hand, after that I have sage-4.2-goodness with longtests passing. There are no problems with Singular on my system. Best, Alex On Sat, Nov 07, 2009 at 09:06:36PM -0800, William Stein wrote: * Build hangs while building libfplll, which is worked around by copying the system's libfplll, and editing the $SAGE_ROOT/local/installed/ to make the build system think that libfplll is installed. I didn't see this at all. * Finally, after the build is done, starting Sage or running the doctests fails with a message about a function in the Singular interface not being implemented. I do not know any workarounds to this. I didn't see this at all either. [...] -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: subclass of hyperelliptic curve class
Hi David,
If you type
sage: X = test(H)
you notice that doesn't give an error. So the problem occurs when
Sage tries to print your object X. Since you haven't defined a
_repr_() method for your class, Sage tries to use the one inherited
from the hyperelliptic curve class. You can see the code for that by
typing
sage: H._repr_?
The first line of code wants to get the hyperelliptic polynomials,
and that's where things break down. I guess you have to write your
own _repr_() method for your inherited class. It can be as simple as
class test
(sage.schemes.hyperelliptic_curves.hyperelliptic_rational_field.HyperellipticCurve_rational_field):
def __init__(self,C):
self.C = C
def _repr_(self):
return self.C._repr_()
Disclaimer: I haven't actually tried this out, but I'd be surprised if
it didn't work :)
Of course, if you will eventually have more info that you want printed
about your class, you can customise _repr_() to your liking.
Best,
Alex
On Thu, Nov 05, 2009 at 01:09:25PM -0800, David Holmes wrote:
Hi,
I am trying to write a subclass of the class of hypereliptic curves
over QQ, for example:
class test
(sage.schemes.hyperelliptic_curves.hyperelliptic_rational_field.HyperellipticCurve_rational_field):
def __init__(self,C):
self.C = C
then in sage I type
R.x = QQ[]
H = HyperellipticCurve(x^9+1)
test(H)
the last lline gives a long string of error traceback ending
...
/usr/local/sage/sage-4.2/local/lib/python/pprint.pyc in _safe_repr
(object, context, maxlevels, level)
318 return format % _commajoin(components), readable,
recursive
319
-- 320 rep = repr(object)
321 return rep, (rep and not rep.startswith('')), False
322
/usr/local/sage/sage-4.2/local/lib/python2.6/site-packages/sage/
structure/sage_object.so in
sage.structure.sage_object.SageObject.__repr__ (sage/structure/
sage_object.c:1416)()
/usr/local/sage/sage-4.2/local/lib/python2.6/site-packages/sage/
schemes/hyperelliptic_curves/hyperelliptic_generic.pyc in _repr_(self)
93
94
--- 95 f, h = self._hyperelliptic_polynomials
96 R = self.base_ring()
97 y = self._printing_ring.gen()
AttributeError: 'test' object has no attribute
'_hyperelliptic_polynomials'
I am not sure what to do about this, any help will be much
appreciated.
Thank you,
David Holmes
--
Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne
-- Australia -- http://www.ms.unimelb.edu.au/~aghitza/
--~--~-~--~~~---~--~~
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[sage-support] Re: symbolic/expression.pyx documentation patch
On Thu, Oct 22, 2009 at 01:11:18PM -0400, Mariah Lenox wrote: Would a sage developer please check in this (very minor) patch to the symbolic/expression.pyx documentation. [...] Up at http://trac.sagemath.org/sage_trac/ticket/7265 -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: ubuntu 9.04 sage notebook LaTeX does not work : kpdf not availabe
On Fri, Sep 4, 2009 at 7:59 PM, Fredericfrederic.duro...@googlemail.com wrote: Which alternative package to kpdf should I use and should I recompile/reconfigure Sage ? Hi Frederic, I regularly use evince or xpdf to view pdf files in Ubuntu. There shouldn't be any need for you to recompile Sage. Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: English grammar of numbers
And I have a similar aversion against an Unix machine (without intention to offend Unix, but I would say a Unix machine). What do natives think? So, isn't it only about the vowels a,e,i, after all? For words that start with u, if the initial sound is like a you, one uses a instead of an, e.g. a university, or a Unix machine, or a unicorn. If the initial sound is closer to an ah (damn it's hard to write this down), one uses an, e.g. an unusual circumstance versus a usual circumstance. I hope this makes sense. Also, disclaimer: IANANES (I am not a native English speaker :) -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Jocobi Symbol
Try sage: kronecker_symbol(a, N) with a and N your favourite integers. Best, Alex On Sun, Jul 19, 2009 at 4:28 PM, Santanu Sarkarsarkar.santanu@gmail.com wrote: How Jacobi Symbol (a/N) can be calculate in Sage 4.1 -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Bits problem
It's now N.nbits() Best, Alex On Sat, Jul 18, 2009 at 10:53 PM, Santanu Sarkarsarkar.santanu@gmail.com wrote: How can find the number of bits of an integer in Sage 4.1 ? Say, N=1234. In Sage 3.1.1 it was N.bits() . -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: cube roots
On Thu, May 14, 2009 at 1:19 PM, Bill Page bill.p...@newsynthesis.org wrote: On Wed, May 13, 2009 at 10:46 PM, Mike Hansen wrote: On Wed, May 13, 2009 at 6:58 PM, Bill Page wrote: Can someone explain this apparently inconsistent result? It's just operator precedence: sage: -(2.0^(1/3)) -1.25992104989487 sage: (-2.0)^(1/3) 0.629960524947437 + 1.09112363597172*I Clear. Thanks. Why this particular root? I believe that it is the real 3rd root of 2 times the natural primitive 6th root of 1, i.e. exp(2*pi*i/6). -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: memory leak?
On Sun, May 3, 2009 at 6:33 PM, mabshoff michael.absh...@mathematik.uni-dortmund.de wrote: FYI: Simon's patch doesn't make any difference for the amount of memory used for sage: while p2^20: : p=next_prime(p) : g=FindGroupOrder(p,11) : In both cases about 2046MB more were used after the loop :(. Note however that running just a loop where the polynomial ring is created does benefit from the change in Simon's patch: doing it for p up to 2^17, this used to eat up 272MB, and after the patch it's only taking 10MB. I did experience the same phenomenon that Michael is describing when running loops where elliptic curves (or even just plane curves) are created. The patch seems to have no effect on those loops. Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: memory leak?
When an elliptic curve is created the code in the __init__ function in
ell_generic.py (lines 164-5) do cause a multivariate polynomial ring
to be created. In this case it's a new ring each time as the base
field is always a new field.
How is the multivariate polynomial ring created?
First the projective plane is constructed, effectively by
PP=ProjectiveSpace(2,K), and then the ring by PP.coordinate_ring(),
which calls
PolynomialRing(self.base_ring(),
self.variable_names(),
self.dimension_relative()+1)
so in effect we call PolynomialRing(K).
John
Well, is there any way to avoid this? It seems like a bad thing to
waste a couple GB on rings that in the end aren't used any more once
the curve E is delete.
I can confirm (if there was any doubt) that one can try
{{{
for p in prime_range(upper):
R.x, y, z = PolynomialRing(GF(p), 3)
}}}
and watch it eat 800MB of RAM.
I can see good reasons why we want the current behaviour of
uniqueness of parents, and what we just saw here is a good reason
why we might *not* want it. How can we reconcile this? Can we make
it easy to turn off uniqueness of parents in some situations?
Best,
Alex
--
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-- Australia -- http://www.ms.unimelb.edu.au/~aghitza/
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[sage-support] Re: Sage in an xterm - some queries
Hi, On Sat, May 2, 2009 at 10:53 AM, Alasdair amc...@gmail.com wrote: I generally use my CAS's (Maple, Maxima, Sage at the moment) in an xterm, unless I have some application which requires graphics. But there are one or two interface issues which would make xterm/console mode much more pleasant to use. In no particular order: * Different colours (user specified) for prompt, input and output * Output automatically pretty-printed and centered Can you give some specific examples of what you would like to see? * (This is a more general Sage issue): when a variable is defined, as in x=sqrt(y^2+1) it is automatically printed to the screen, unless the user requests otherwise (say, with a semi-colon) If this can be done, I hope it would be optional or easy to turn off -- I'm quite fond of the current behaviour. Is there any easy way of coercing Sage to act like this? You would probably need to tweak the preparser and play with ipython, but I don't know enough about this to actually do it... Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Sage for Gentoo Linux
Hi, I don't know the answer to your question, however: when I was using Gentoo, I had no trouble installing Sage from source. So if neither of the two binaries works for you, that might be the way to go. Best, Alex On Wed, Apr 1, 2009 at 5:03 AM, John P. Burkett burk...@uri.edu wrote: The installation instructions in README.txt at http://modular.fas.harvard.edu/sage/linux/32bit/index.html state that the Debian version will likely work on many other Linux distributions,since it was built on a minimal Debian install. At the same site, I see two Debian versions: 5.0_lenny and 4.0_etch. Is one or the other of these a better choice for installing on a Gentoo Linux box? -John -- John P. Burkett Department of Economics University of Rhode Island Kingston, RI 02881-0808 USA phone (401) 874-9195 -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: 3-D plots of affine varieties
On Sun, Mar 22, 2009 at 4:43 PM, Mike Hansen mhan...@gmail.com wrote: Hello, On Mar 21, 10:13 pm, Minh Nguyen nguyenmi...@gmail.com wrote: Hi folk, I may be missing something here, but when I tried to plot 0 = x^2 + y^2 - z^2 I received an error: What you want is implicit 3d plotting which is not in Sage (yet). See http://trac.sagemath.org/sage_trac/ticket/5249 for preliminary work by Carl Witty and Bill Cauchois. shameless self-referral Also, if you apply those patches, you can then try out the worksheets attached under Tuesday March 10 at http://wiki.sagemath.org/days14 (check out the ones named SD14__Visualisation*, they have a bunch of examples of plots of varieties) /shameless self-referral Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Special linear group on finite field
Judging from the error message unable to coerce from a finite field other than the prime subfield, it seems that in Martin's examples a coercion is attempted from GF(p^a) to GF(p^b) where a1. In David's example, the larger field is GF(3^2) so any coercion would be coming from GF(3), hence not covered by the error message. So I don't think it has to do with trac #5491. It is either a problem with Sage finite fields, or with translating between Gap finite fields and Sage finite fields. I'll have a closer look later today and open a ticket. Best, Alex On Mon, Mar 16, 2009 at 8:19 AM, David Joyner wdjoy...@gmail.com wrote: This doesn't seem to happen for smaller values, sage: n = 2; q = 3 sage: H = PSL(n,q^2) sage: H.center() Permutation Group with generators [()] sage: n = 2; q = 2 sage: H = PSL(n,q^2) sage: H.center() Permutation Group with generators [()] so maybe the problem is related to http://trac.sagemath.org/sage_trac/ticket/5491? On Sun, Mar 15, 2009 at 3:07 PM, Martin Mereb mme...@gmail.com wrote: and also got this problem n=3;q=4; H = SL(n,q^2); H.center() Traceback (most recent call last): File stdin, line 1, in module File /home/sage/sagenb/sage_notebook/worksheets/Tincho/3/code/3.py, line 10, in module H.center() File /home/sage/sage_install/sage-a/local/lib/python2.5/site-packages/SQLAlchemy-0.4.6-py2.5.egg/, line 1, in module File /home/sage/sage_install/sage-a/local/lib/python2.5/site-packages/sage/groups/matrix_gps/matrix_group.py, line 678, in center self.__center = MatrixGroup([g._matrix_(F) for g in G]) File /home/sage/sage_install/sage-a/local/lib/python2.5/site-packages/sage/interfaces/gap.py, line 1131, in _matrix_ entries = [[R(self[r,c]) for c in range(1,m+1)] for r in range(1,n+1)] File finite_field_givaro.pyx, line 586, in sage.rings.finite_field_givaro.FiniteField_givaro.__call__ (sage/rings/finite_field_givaro.cpp:4680) File /home/sage/sage_install/sage-a/local/lib/python2.5/site-packages/sage/interfaces/gap.py, line 1248, in gfq_gap_to_sage return F(K(g**e)) File finite_field_givaro.pyx, line 530, in sage.rings.finite_field_givaro.FiniteField_givaro.__call__ (sage/rings/finite_field_givaro.cpp:4005) TypeError: unable to coerce from a finite field other than the prime subfield -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Substitution
Hi,
On Fri, Mar 13, 2009 at 7:09 PM, hpon peter.norli...@gmail.com wrote:
Hi,
What is the easiest way to make a mathematical substitution in Sage?
For example: We have
eqn1 = F == a + b
I'm not sure I understand what you are trying to do in this line. If you
just want to define F as the sum of a and b, use
var('a b') # to tell Sage that a and b are symbolic
variables
F = a + b
and would like to use a = 0 and b = 3 to calculate F.
Now F is a symbolic expression, and you can perform substitutions easily as
follows:
F.substitute(a=0, b=3) # and Sage will answer: 3
If you do F.substitute? you will get the documentation for the substitution
method, with more examples of usage.
Best,
Alex
--
Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne --
Australia -- http://www.ms.unimelb.edu.au/~aghitza/
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[sage-support] two questions about sage-mode
Hi folks, Quite a few people at Sage Days 14 are fans of emacs and therefore trying to use sage-mode. In particular, Mike Stillman had two questions that I didn't know how to answer. It might be that these are not implemented as of yet and should be, in which case I'll make enhancement trac tickets for them: 1. suppose you run doctests on a file from inside emacs, and that you get a failure with a line number; is there a sage-mode way of jumping to that line in the source file? 2. is there an easy way of restarting sage in emacs? or even to rebuild and restart? this would come in handy when making changes to the sage library Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Fwd: two questions about sage-mode
-- Forwarded message -- From: Nick Alexander ncalexan...@gmail.com Date: Thu, Mar 12, 2009 at 10:08 AM Subject: Re: two questions about sage-mode To: Alex Ghitza aghi...@gmail.com On 11-Mar-09, at 3:48 PM, Alex Ghitza wrote: Hi folks, Quite a few people at Sage Days 14 are fans of emacs and therefore trying to use sage-mode. In particular, Mike Stillman had two questions that I didn't know how to answer. It might be that these are not implemented as of yet and should be, in which case I'll make enhancement trac tickets for them: 1. suppose you run doctests on a file from inside emacs, and that you get a failure with a line number; is there a sage-mode way of jumping to that line in the source file? Are you using sage-test? (I have it bound to C-c C-t). Then you can use the standard emacs C-x ` (next-error) to jump around. I could improve this if necessary. 2. is there an easy way of restarting sage in emacs? or even to rebuild and restart? this would come in handy when making changes to the sage library Yes, newer versions have rerun-sage (which kills and restarts an existing session), sage-build (which builds) and C-u sage-build which builds and reruns. sage-build is bound to C-c C-b for me -- I don't think I bind them by default. Sorry that the documentation is scant, sounds like that really needs work. Try them out! Thanks for the feedback, Nick -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: question on modular curves in Sage
Hi David, I believe that the answer is yes. There is an optional package called database_kohel, which is a database of various types of modular polynomials, gathered by David Kohel. You can add it to your Sage install as usual by doing sage -i database_kohel-20060803 After that, you get access to these polynomials as follows: Classical modular polynomials: sage: C = ClassicalModularPolynomialDatabase() sage: f = C[29] sage: f.degree() 58 sage: f.coefficient([28, 28]) 400152899204646997840260839128 Atkin modular polynomials: sage: A = AtkinModularPolynomialDatabase() sage: f = A[29] sage: f.degree() 30 sage: f x^30 - x^29*j + 714*x^29 + 29*x^28*j + 175653*x^28 - 319*x^27*j + 16216684*x^27 + 1421*x^26*j + 340795182*x^26 + 580*x^25*j + 3339922344*x^25 - 26680*x^24*j + 18681529256*x^24 + 53679*x^23*j + 65190964932*x^23 + 189399*x^22*j + 145746939921*x^22 - 622398*x^21*j + 193096339978*x^21 - 853818*x^20*j + 79225176183*x^20 + 3427365*x^19*j - 213842083608*x^19 + 3592085*x^18*j - 434696047201*x^18 - 10954634*x^17*j - 278856446718*x^17 - 14041394*x^16*j + 154093039581*x^16 + 18871083*x^15*j + 391233115204*x^15 + 37142939*x^14*j + 212930064261*x^14 - 9216142*x^13*j - 78041237118*x^13 - 54103270*x^12*j - 159006324329*x^12 - 19207947*x^11*j - 71430269112*x^11 + 38397537*x^10*j + 10575486927*x^10 + 31795426*x^9*j + 31231369098*x^9 - 9708910*x^8*j + 17209092681*x^8 - 19103721*x^7*j + 1339615908*x^7 - 2357613*x^6*j - 3310173216*x^6 + 5229135*x^5*j - 2067026040*x^5 + 1754181*x^4*j - 591595650*x^4 - 570024*x^3*j + 73993500*x^3 - 281880*x^2*j + 118918125*x^2 + 12150*x*j + j^2 + 41006250*x + 6750*j + 11390625 There is also a DedekindEtaModularPolynomialDatabase, with the same syntax as the others. If I read the Magma documentation correctly, this is what they call canonical modular polynomials (maybe David Kohel can correct me here, if I'm wrong). In fact, Magma's commands also use databases, and I think they are the same as the ones in Sage's optional package. Best, Alex On Sun, Feb 15, 2009 at 9:37 AM, David Joyner wdjoy...@gmail.com wrote: Hi: I'm wondering if the analog of the following Magma commands exist in Sage yet: ClassicalModularPolynomial, CanonicalModularPolynomial, AtkinModularPolynomial. The modular polynomil $H_N$ has the property that $H_N(x,y)= 0$ describes (an affine patch of) $X_0(N)$. (I'm trying to remove all mention of Magma from a paper I wrote long ago http://arxiv.org/abs/math.NT/0403548 and this question arose from that.) Thanks, David JOyner -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: server shutdown
This is more of a workaround than a straight answer, but you can use the gnu screen terminal multiplexer to get a process started, log off, then come back and regain console access to it. Then you can, for instance, use ctrl-c to kill the server from within your sage session. Best, Alex On Sat, Jan 24, 2009 at 5:08 AM, Nathan Carter nathancart...@gmail.comwrote: Yes, but I'm running it in the background (and then logging off). So that process is not in the foreground anymore. (Furthermore, the sage process actually starts lots of others, in a linear chain, so ps ax lists lots of sage- and sage-wiki-related stuff.) Nathan On Jan 23, 2009, at 1:02 PM, Luiz Felipe Martins wrote: Ctrl-c will shut down the server On Fri, Jan 23, 2009 at 9:25 AM, Nathan Carter nathancart...@gmail.com wrote: This may seem like a basic question, but how should I shut down the sage server? And the wiki? That is, I have a script that does this: /path/to/sage-3.2.3/sage start_notebook.sage # on port 8000 /path/to/sage-3.2.3/sage start_wiki.sage # on port 9000 and so I run it and log off, and voila! sage and the wiki are all set. Then later I want to restart it for one reason or another (or just add a nice shutdown script to the machine's shutdown scripts) and all I know to do is kill -9 a whole bunch of processes, which is (I hope) not the official solution. This seems like a basic question, so I apologize if it's in the docs, but I did Google sagemath.org and didn't see anything under server shutdown or server shut down. Thank you! Nathan PS: Is that how I should be starting the wiki...in its own separate sage run? Since notebook() doesn't return, I don't know how to do it in one session. -- The main things which seem to me important on their own account, and not merely as means to other things, are knowledge, art, instinctive happiness, and relations of friendship or affection. -Bertrand Russell L. Felipe Martins Department of Mathematics Cleveland State University luizfelipe.mart...@gmail.com -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Error in abc.n(digits=5)
Hello, I am unable to reproduce the error you obtained. Here is what I get in 3.2.2: -- | Sage Version 3.2.2, Release Date: 2008-12-18 | | Type notebook() for the GUI, and license() for information.| -- sage: proofStrain,f_y,gamma_ms = 0.002, 250, 1.1499 sage: abc = 3150/(2000*(proofStrain + 5.00e-6*f_y/gamma_ms) + 7) sage: abc 239.108910891089 sage: abc.n(digits=5) 239.11 Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Perhaps a bug
On Sat, Dec 13, 2008 at 6:52 PM, Kwankyu ekwan...@gmail.com wrote: Hi, -- | Sage Version 3.2.1, Release Date: 2008-12-01 | | Type notebook() for the GUI, and license() for information.| -- sage: 2.2*exp(3) 2.2*e^3 sage: This result is not expected. Is it? I think exp(3) should be converted to an approximate real. In case you're wondering how to achieve the result you're after: sage: RR(2.2*exp(3)) 44.1881812310129 Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: no plotting
The correct syntax is sin(x), not sin x. And so the following works: sage: plot(sin(x), (-1,1)) Best, Alex -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: no plotting
Sorry Martin, I completely missed the second sage: prompt in your original email. It's very likely that the problem is due to sage -upgrade. I don't know enough about these things to give you better advice than start over with a fresh download of Sage, and you've mentioned that this might not be an option for a while. Hopefully someone else on this list will know some magic to fix this. Note, however, that sage -upgrade is *not* recommended practice, precisely because this sort of problem keeps popping up over and over again. The recommended way of getting a new version is downloading the new binaries or source. Good luck, Alex On Sat, Oct 18, 2008 at 6:27 PM, Martin Rubey [EMAIL PROTECTED]wrote: I should have added: I did a sage -upgrade before. Doing sage -upgrade again I now get: Finished extraction There is no spkg-install script, no setup.py, and no configure script, so I do not know how to install /home/martin/sage-3.1.1/spkg/standard/sage-3.1.2.spkg. make: *** [installed/sage-3.1.2] Fehler 1 Command exited with non-zero status 2 1.54user 0.14system 0:02.16elapsed 78%CPU (0avgtext+0avgdata 0maxresident)k 200inputs+4736outputs (0major+7366minor)pagefaults 0swaps Martin -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: multiply a list by a constant
Hmmm. As far as I know you can use _ as a placeholder for a variable, and it's meant for this kind of use (where you don't really want to introduce a new variable name). It's strange that it doesn't work for you. Can you post the error message that you get? I guess it's not a big deal since you can always use x as you did, but if it's really not working it might be a sign of other trouble. Alex On Sun, Oct 19, 2008 at 3:31 PM, pong [EMAIL PROTECTED] wrote: Hi Alex Thanks for the quick reply. By _ you mean a variable? I tried your syntax but it does not work. However, [2*x for x in [3,4]] does work. -- Alex Ghitza -- Lecturer in Mathematics -- The University of Melbourne -- Australia -- http://www.ms.unimelb.edu.au/~aghitza/ --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Sage server on a gentoo system
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi, I don't think you need to do anything special. Just install sage the normal way (either from binaries or building from source), then run sage -notebook This can be run either as root or as a normal user (probably preferable). You do not need to install or configure apache, since sage comes with its own web server, twisted. It's probably a good idea, before you start a notebook, to type notebook? in sage and read the documentation. BTW, for mysterious reasons I can only get sage-2.10.2 and earlier to serve the notebook for outside connections; I've been having trouble with the newer versions. So if you cannot get sage-2.11 or so to work, you might want to try an earlier version. Best, Alex gerhard wrote: | Does anybody have some hints on how to | get a sage server up and running on a gentoo system? | | I have never tried it on any system, and the guidelines | in the sage docs do not readily apply in this case. | | I presume I need to configure apache somehow, | create subdirectories with the sage code, | and ?? | | Thanks, | -gerhard | | | - -- Alexandru Ghitza Assistant Professor Department of Mathematics Colby College Waterville, ME 04901 http://bayes.colby.edu/~ghitza/ -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkgKICIACgkQdZTaNFFPILgXkACff7zJ83HRcoT7XyQ7useaDwaF aJEAn0z6al6tQaDJPi+mCEaTBxJ3Myw/ =nrvO -END PGP SIGNATURE- --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Sage server on a gentoo system
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 William Stein wrote: | On Sat, Apr 19, 2008 at 9:38 AM, Alex Ghitza [EMAIL PROTECTED] wrote: | The mysterious reason is that we enhanced the security of | the notebook for local users. Namely, you now *must* do | | sage -c notebook(address='the.address.of.your.computer') | | in order to have the notebook listen on anything other than localhost. | In 2.10.2 and some earlier versions we temporarily had a *bug* that | made the notebook listen on all addresses by default. This is less | secure since people using the notebook locally are exposing themselves | to the possibility of somebody not logged into their computer attempting | to hack into the notebook.This behavior is documented a tiny bit | in the address section of notebook?, though it's not very detailed! | | address-- (default: 'localhost'), address to listen on | Excellent! Gerhard, this now works for me with sage-3.0.alpha5: sage -c notebook(address='137.146.194.57', open_viewer=False, directory='/home/ghitza/notebooks/ma311') The same command with address='bayes.colby.edu' instead of the ip address did not work. Also, before issuing this command I had created the various user accounts (see notebook? for details on how to do that). Best, Alex - -- Alexandru Ghitza Assistant Professor Department of Mathematics Colby College Waterville, ME 04901 http://bayes.colby.edu/~ghitza/ -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkgKJOUACgkQdZTaNFFPILgfzwCeMnZVqC4u3NqC5RNNBPRsIOLQ rtoAn2RHTVRfj++tqZB12wcv1iQAlPSe =fbuo -END PGP SIGNATURE- --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] trouble starting publicly-accessible notebook
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi folks, I run a notebook server for one of the classes I'm teaching. It works fine with sage-2.10.2, but I have trouble with more recent versions. It might have something to do with the new version of twistd, but I really don't know anything about this. So here's what happens. Under sage-2.10.2, I get - -- | SAGE Version 2.10.2, Release Date: 2008-02-22 | | Type notebook() for the GUI, and license() for information.| - -- sage: notebook(directory='/home/ghitza/notebooks/ma311/', address='bayes.colby.edu', accounts=False, open_viewer=False) The notebook files are stored in: /home/ghitza/notebooks/ma311 ** ** * Open your web browser to https://bayes.colby.edu:8000 * ** ** There is an admin account. If you do not remember the password, quit the notebook and type notebook(reset=True). Removing stale pidfile /home/ghitza/notebooks/ma311/twistd.pd 2008/04/16 09:19 -0400 [-] Log opened. 2008/04/16 09:19 -0400 [-] twistd 2.5.0 (/opt/sage-2.10.2-linux-32bit-debian-i686-Linux/local/bin/python 2.5.1) starting up 2008/04/16 09:19 -0400 [-] reactor class: class 'twisted.internet.selectreactor.SelectReactor' 2008/04/16 09:19 -0400 [-] Loading ma311/twistedconf.tac... 2008/04/16 09:19 -0400 [-] Loaded. 2008/04/16 09:19 -0400 [-] twisted.web2.channel.http.HTTPFactory starting on 8000 2008/04/16 09:19 -0400 [-] Starting factory twisted.web2.channel.http.HTTPFactory instance at 0x941fc0c And then if I go to https://bayes.colby.edu:8000/ I see the login page. ~ Everything is great. Now if I try the same thing, say with sage-3.0.alpha5: - -- | SAGE Version 3.0.alpha5, Release Date: 2008-04-15 | | Type notebook() for the GUI, and license() for information.| - -- sage: notebook(directory='/home/ghitza/notebooks/ma311/', address='bayes.colby.edu', accounts=False, open_viewer=False) The notebook files are stored in: /home/ghitza/notebooks/ma311 ** ** * Open your web browser to https://bayes.colby.edu:8000 * ** ** There is an admin account. If you do not remember the password, quit the notebook and type notebook(reset=True). Removing stale pidfile /home/ghitza/notebooks/ma311/twistd.pd 2008-04-16 09:27:24-0400 [-] Log opened. 2008-04-16 09:27:24-0400 [-] twistd 8.0.1 (/opt/sage-3.0.alpha5/local/bin/python 2.5.1) starting up 2008-04-16 09:27:24-0400 [-] reactor class: class 'twisted.internet.selectreactor.SelectReactor' 2008-04-16 09:27:24-0400 [-] twisted.web2.channel.http.HTTPFactory starting on 8000 2008-04-16 09:27:24-0400 [-] Starting factory twisted.web2.channel.http.HTTPFactory instance at 0x92edd6c I now try https://bayes.colby.edu:8000 and get refused the connection with Epiphany and unable to connect, can't establish a connection with Firefox. I have no idea what's wrong. One clear difference that I notice is that in the working version there are two lines saying 2008/04/16 09:19 -0400 [-] Loading ma311/twistedconf.tac... 2008/04/16 09:19 -0400 [-] Loaded. and this is missing in the non-working version. By the way, the machine's specs are Linux bayes 2.6.22-gentoo-r5 #1 SMP Tue Aug 28 21:27:16 UTC 2007 i686 Intel(R) Xeon(TM) CPU 3.20GHz GenuineIntel GNU/Linux Thanks, Alex - -- Alexandru Ghitza Assistant Professor Department of Mathematics Colby College Waterville, ME 04901 http://bayes.colby.edu/~ghitza/ -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFIBgC9dZTaNFFPILgRAuCaAJ4jXfANTd368/5L86GypKaAYYz3AwCeOszl E/ykc5SKTGzQKuf+e8og9nk= =ws5O -END PGP SIGNATURE- --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: trouble starting publicly-accessible notebook
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 William Stein wrote: | On Wed, Apr 16, 2008 at 6:35 AM, Alex Ghitza [EMAIL PROTECTED] wrote: | Hi folks, | | I run a notebook server for one of the classes I'm teaching. It works | fine with sage-2.10.2, but I have trouble with more recent versions. It | might have something to do with the new version of twistd, but I really | don't know anything about this. | | So here's what happens. Under sage-2.10.2, I get | | Just as a test could you try with running the notebook command | with secure=False and let us know what happens? Yes, here we go: sage: notebook(address='bayes.colby.edu', open_viewer=False, secure=False) The notebook files are stored in: /home/ghitza/.sage//sage_notebook WARNING: Running the notebook insecurely may be dangerous. Make sure you know what you are doing. ** WARNING: Insecure notebook server listening on external address. Unless you are running this via ssh port forwarding, you are **crazy**! You should run the notebook with the option secure=True. ** * * * Open your web browser to http://bayes.colby.edu:8000 * * * Removing stale pidfile /home/ghitza/.sage/sage_notebook/twistd.pd 2008-04-16 09:43:58-0400 [-] Log opened. 2008-04-16 09:43:58-0400 [-] twistd 8.0.1 (/opt/sage-3.0.alpha5/local/bin/python 2.5.1) starting up 2008-04-16 09:43:58-0400 [-] reactor class: class 'twisted.internet.selectreactor.SelectReactor' 2008-04-16 09:43:58-0400 [-] twisted.web2.channel.http.HTTPFactory starting on 8000 2008-04-16 09:43:58-0400 [-] Starting factory twisted.web2.channel.http.HTTPFactory instance at 0x8ab434c And trying http://bayes.colby.edu:8000 fails in the same way as before refused the connection. Alex - -- Alexandru Ghitza Assistant Professor Department of Mathematics Colby College Waterville, ME 04901 http://bayes.colby.edu/~ghitza/ -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFIBgMPdZTaNFFPILgRAgwuAKCGc2xZzMw0NxkNvSUUTpvgifWdwwCeIbZE 9IBMtru+fLFFh5qWvyxIyuU= =P76i -END PGP SIGNATURE- --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Trying to graph cubic function f(x)=x^(1/3)
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi Andy, I had the exact same question a few days ago. There are many issues involved here, but the short answer to your question (provided by Carl Witty) is: you can plot x^(1/3) with show(plot(lambda x : RR(x).nth_root(3), -10, 10), figsize=[5,5], ymin=-10, ymax=10) You don't need to specify xmin and xmax in show since they're given in the plot command. Best, Alex Andy wrote: | I am interested in the use of Sage as a teaching tool at all grade | levels. At the moment, I'm trying to weave Sage into an introductory | algebra curriculum. | | I can graph all the basic functions with plot(x), replacing x with | x^2, x^3, 1/x, etc. The one I can't get to work is x^(1/3). I've | tried to express the cube root function several different ways. The | expression I'm using now is: | | sage: | show(plot(x^(1/3),-10,10),figsize=[5,5],xmin=-10,xmax=10,ymin=-10,ymax=10) | | I receive the error message TypeError: 'float' object is | unsubscriptable | | Also, is the expression above the most succinct way to generate a | graph with this kind of view, x and y ranging -10 to 10? | | Thanks for any advice. | | Andy | | | - -- Alexandru Ghitza Assistant Professor Department of Mathematics Colby College Waterville, ME 04901 http://bayes.colby.edu/~ghitza/ -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHvtngdZTaNFFPILgRAvbjAJ9qlM5R2UnmCHwOMV2HOlhg+LcwZACcC21K Mrx/wRMSjGXeYz2KpkXN0Xo= =O3v+ -END PGP SIGNATURE- --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] desolve
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hi,
I'm trying the following:
~sage: t = var('t')
~sage: x = function('x', t)
~sage: de = lambda y: diff(y,t) - y^4
~sage: desolve(de(x(t)),[x,t])
I get: 't+%c'
But x(t)=t is clearly not a solution of diff(y,t) = y^4. So either I'm
doing something very silly, or I should report this as a bug.
Best,
Alex
- --
Alexandru Ghitza
Assistant Professor
Department of Mathematics
Colby College
Waterville, ME 04901
http://bayes.colby.edu/~ghitza/
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NrGLOHJ5M+yY6YuEJ8q2TPE=
=+BAW
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[sage-support] Re: desolve
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Thanks, David, that does indeed explain it. How hard would
it be to have Sage figure out if the ODE is nonlinear and
return an error instead of a fake solution?
Alex
David Joyner wrote:
| The DE is not linear. The docstring (type ?desolve) says:
| Solves a 1st or 2nd order linear ODE via maxima.
|
| On Feb 18, 2008 10:03 PM, Alex Ghitza [EMAIL PROTECTED] wrote:
| Hi,
|
| I'm trying the following:
|
| ~sage: t = var('t')
| ~sage: x = function('x', t)
| ~sage: de = lambda y: diff(y,t) - y^4
| ~sage: desolve(de(x(t)),[x,t])
|
| I get: 't+%c'
|
| But x(t)=t is clearly not a solution of diff(y,t) = y^4. So either I'm
| doing something very silly, or I should report this as a bug.
|
| Best,
| Alex
|
|
|
|
|
|
- --
Alexandru Ghitza
Assistant Professor
Department of Mathematics
Colby College
Waterville, ME 04901
http://bayes.colby.edu/~ghitza/
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k+clWC5glNvb8t1Rmz04V1M=
=GSFn
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[sage-support] Re: Another possible bug in parametric_plot/show
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 bill.p wrote: | Sorry, Carl, it's | http://www.billp.org/Fermat_1729.sws | | Here's my transcript of the notebook for David. Firefox wouldn't let | me copy/paste from the notebook! | Ended up pressing the 'print' link, then doing File/save-as on that | and then editing out | all the HTML junk. Hi Bill, Sorry I don't have any feedback on your actual question, but there is an easier way to get the contents of your worksheet than what you describe: on the upper right side of the page there are 6 blue buttons. The third one is called Text; if you press that, you get a plain text version of your worksheet, which you can then copy/paste/etc. Best, Alex - -- Alexandru Ghitza Assistant Professor Department of Mathematics Colby College Waterville, ME 04901 http://bayes.colby.edu/~ghitza/ -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHtwATdZTaNFFPILgRAm+dAJ0ffl2bse+abrMeuOdU6po2XpXFywCfaG55 MRkz/XxY51TaVxl6dnNEdd4= =U3Ed -END PGP SIGNATURE- --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] problems with modular symbols over finite fields
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi, I've been playing with spaces of modular symbols over finite fields, and I ran into two issues that seem to be separate (they're tickets #1231 and #1232 now): 1. doing ModularSymbols(1,8,0,GF(3)).simple_factors() gives - Unhandled SIGSEGV: A segmentation fault occured in SAGE. This probably occured because a *compiled* component of SAGE has a bug in it (typically accessing invalid memory) or is not properly wrapped with _sig_on, _sig_off. You might want to run SAGE under gdb with 'sage -gdb' to debug this. SAGE will now terminate (sorry). - The same phenomenon occurs over other finite fields. 2. doing ModularSymbols(1,6,0,GF(2)).simple_factors() gives - --- type 'exceptions.AssertionError'Traceback (most recent call last) /home/ghitza/sage/ipython console in module() /opt/sage/local/lib/python2.5/site-packages/sage/modular/modsym/space.py in simple_factors(self) 996 ASSUMPTION: self is a module over the anemic Hecke algebra. 997 - -- 998 return [S for S,_ in self.factorization()] 999 1000 def star_eigenvalues(self): /opt/sage/local/lib/python2.5/site-packages/sage/modular/modsym/ambient.py in factorization(self) 1064 D = sage.structure.all.Factorization(D, cr=True) 1065 assert r == s, bug in factorization -- self has dimension %s, but sum of dimensions of factors is %s\n%s%( - - 1066 r, s, D) 1067 self._factorization = D 1068 return self._factorization type 'exceptions.AssertionError': bug in factorization -- self has dimension 2, but sum of dimensions of factors is 3 (Modular Symbols subspace of dimension 1 of Modular Symbols space of dimension 2 for Gamma_0(1) of weight 6 with sign 0 over Finite Field of size 2) * (Modular Symbols subspace of dimension 1 of Modular Symbols space of dimension 2 for Gamma_0(1) of weight 6 with sign 0 over Finite Field of size 2) * (Modular Symbols subspace of dimension 1 of Modular Symbols space of dimension 2 for Gamma_0(1) of weight 6 with sign 0 over Finite Field of size 2) - - I have not looked at the implementation, but as far as I know the algorithms with modular symbols work directly over the field of definition, so it seems unlikely that this is related to the problem that Ifti raised a few days ago, about reduction of coefficients modulo prime ideals. Best, Alex -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFHQ6xYdZTaNFFPILgRAgzMAJ9UhL4+sB/aX4KkTGCMuhKzbpJ1VwCfScqU sbMU91l2mRWyVMLdtYEu4vM= =7Moa -END PGP SIGNATURE- --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: sage-2.8.5
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Success on Intel Core 2 running Gentoo:
Machine: Linux latitude 2.6.21-gentoo-r4 #1 SMP Wed Jul 18 15:19:23 EDT
2007 i686 Genuine Intel(R) CPU T2400 @ 1.83GHz GenuineIntel GNU/Linux
real66m23.913s
user64m31.750s
sys 4m40.942s
To install gap, gp, singular, etc., scripts
in a standard bin directory, start sage and
type something like
sage: install_scripts('/usr/local/bin')
at the SAGE command prompt.
SAGE build/upgrade complete!
All tests passed!
Total time for all tests: 1286.0 seconds
Excellent,
Alex
William Stein wrote:
Hi,
SAGE 2.8.5 has been released at http://sagemath.org/.
This is a *MAJOR* new Sage release, which includes many bugfixes (some
quite important to usability), and substantial new features and
functionality. Sage 2.8.5 includes Mike Hansen's massive new
combinatorics packages along with the Symmetrica C library, much new
multivariate polynomial code by Martin Albrecht along with bug fixes
and sparse mod-p linear algebra via Linobx, new algebraic number
fields code by William Stein and Robert Bradshaw, a major refactoring
of NTL by Joel Mohler, Craig Citro, David Harvey and Robert Bradshaw,
Bill Hart and David Harvey's the long-awaited FLINT library for
super-fast polynomial arithmetic is now included standard in SAGE
(though currently it is not used by anything by default, and can only
multiply polynomials), a very nice new global proof option by David
Roe, Robert Bradshaw's complete and fully optimized implementation of
sequence notation [1..5], (2..7), [1,3,5,..19], and updates to MPFR,
IML, and Linbox thanks to Michael Abshoff and Martin Albrecht. PPC32
Linux should now also be officially supported (thanks to Michael
Abshoff). John Cremona also updated mwrank. Finally, Gonzalo Tornaria
and William Stein fixed a major bug in the Sage signal handling
system, so control-c, should now be much more robust.
We closed 43 tickets, which are listed here:
http://trac.sagemath.org/sage_trac/query?status=closedmilestone=sage-2.8.5order=id
or, by category, here:
http://trac.sagemath.org/sage_trac/milestone/sage-2.8.5
Thanks to the many people who contributed to this release, and anybody
I forgot to mention above. There were dozens of people not listed
above who made important contributions.
NOTE: Since this is such a major release, there will likely be problems
and a 2.8.5.1 release shortly to fix them. Please report!
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URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/
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[sage-support] Re: trouble compiling sage-2.8
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi, Yes, everything went fine, thanks to Michael Abshoff's advice. In summary, here's what I did: cd /opt/sage-2.8/spkg/standard tar xvf linbox-20070812.spkg cd linbox-20070812/linbox_wrap libtoolize --copy --force cd ../.. tar cjf linbox-20070812.spkg linbox-20070812 cd /opt/sage-2.8 make You can of course get rid of the directory linbox-20070812 that got created in the process. Cheers, Alex Joel B. Mohler wrote: Alex, Did you find a solution for this? I got the same error on my gentoo as well. I see you have later posts which make it appear that you have sage-2.8 installed. -- Joel On Monday 13 August 2007 11:47, Alex Ghitza wrote: Hi, I'm trying to compile sage-2.8 and it breaks down on linbox_wrap, with the message: checking for correct ltmain.sh version... no configure: error: *** [Gentoo] sanity check failed! *** *** libtool.m4 and ltmain.sh have a version mismatch! *** *** (libtool.m4 = 1.5.22, ltmain.sh = 1.5.22 Debian 1.5.22-4) *** Please run: libtoolize --copy --force if appropriate, please contact the maintainer of this package (or your distribution) for help. I'm running Gentoo on a standard Dell laptop. I tried the libtoolize command in the linbox_wrap subdirectory, and after that make in that directory works, but when I come back down to the sage-2.8 directory and try make again, it tries to compile linbox again and fails with the same message. Is there an easy way to fix this? I run into the same problem if I try to just update from sage-2.7.3. Cheers, Alex -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGwiPXdZTaNFFPILgRAiGXAJ9c/OEX080xXX1uCBYEUkXQAaNEIQCgjbWo SIRA//dkF0UAzgiw2RvthSU= =WM6n -END PGP SIGNATURE- --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
[sage-support] Re: trouble compiling sage-2.8
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Yes, it worked for me as well. Alex William Stein wrote: Does using the linbox package posted here work? http://sage.math.washington.edu/home/was/lj/ Download that and do sage -f linbox-20070814.spkg -- William On 8/14/07, Alex Ghitza [EMAIL PROTECTED] wrote: Hi, Yes, everything went fine, thanks to Michael Abshoff's advice. In summary, here's what I did: cd /opt/sage-2.8/spkg/standard tar xvf linbox-20070812.spkg cd linbox-20070812/linbox_wrap libtoolize --copy --force cd ../.. tar cjf linbox-20070812.spkg linbox-20070812 cd /opt/sage-2.8 make You can of course get rid of the directory linbox-20070812 that got created in the process. Cheers, Alex Joel B. Mohler wrote: Alex, Did you find a solution for this? I got the same error on my gentoo as well. I see you have later posts which make it appear that you have sage-2.8 installed. -- Joel On Monday 13 August 2007 11:47, Alex Ghitza wrote: Hi, I'm trying to compile sage-2.8 and it breaks down on linbox_wrap, with the message: checking for correct ltmain.sh version... no configure: error: *** [Gentoo] sanity check failed! *** *** libtool.m4 and ltmain.sh have a version mismatch! *** *** (libtool.m4 = 1.5.22, ltmain.sh = 1.5.22 Debian 1.5.22-4) *** Please run: libtoolize --copy --force if appropriate, please contact the maintainer of this package (or your distribution) for help. I'm running Gentoo on a standard Dell laptop. I tried the libtoolize command in the linbox_wrap subdirectory, and after that make in that directory works, but when I come back down to the sage-2.8 directory and try make again, it tries to compile linbox again and fails with the same message. Is there an easy way to fix this? I run into the same problem if I try to just update from sage-2.7.3. Cheers, Alex -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGwliPdZTaNFFPILgRAkUsAJ0VUFKh6XPSCzCgbZnqy8ls8ySiAgCghTlT iSsJM85ZWrlDcMcU9JlkGhw= =Blav -END PGP SIGNATURE- --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://sage.math.washington.edu/sage/ and http://sage.scipy.org/sage/ -~--~~~~--~~--~--~---
