[sage-devel] Re: ARM port (again)

2012-04-23 Thread mmarco
Ok, switching to a newer version of ubuntu solved the eclib problem. Now i have another one. Building the sage package i get this error message: Building modified file sage/ext/interpreters/wrapper_el.pyx. Executing 296 commands (using 4 threads) Traceback (most recent call last): File

[sage-devel] Re: ARM port (again)

2012-04-23 Thread mmarco
I did not look very closely at a related issue in chroot'ed builds in x86, but it should be possible to make python multiprocessing use some other approach like pipes in these conditions. What I did to get sage to build in the Mandriva build system was to backport the previous logic for a

[sage-devel] Re: ARM port (again)

2012-04-24 Thread mmarco
There is no /dev/shm in my android system. Could it be that this is the problem? If so, is there any hope of solving it? -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more

[sage-devel] Re: ARM port (again)

2012-04-24 Thread mmarco
Nevermind, it worked by mounting an empty tmpfs as shm device On 24 abr, 18:07, mmarco mma...@unizar.es wrote: There is no /dev/shm in my android system. Could it be that this is the problem? If so, is there any hope of solving it? -- To post to this group, send an email to sage-devel

[sage-devel] Re: RIES

2012-04-26 Thread mmarco
This sounds pretty much like the identify command in maple: http://www.maplesoft.com/support/help/Maple/view.aspx?path=identify For me it looks like a fun tool, but there is some people that use it seriously in their research. -- To post to this group, send an email to

[sage-devel] track 12339, please review

2012-04-27 Thread mmarco
I have a first version of an implementation of free groups, finitely presented groups and braid groups. For the moment there is a partial list of the fatures: -operation in free groups, finitely presented groups and braid groups through gap. -some gap functions are wrapped, such as abelian

[sage-devel] Re: track 12339, please review

2012-04-28 Thread mmarco
Thus, I very much appreciate to have braids and braid groups in Sage. Any chance to get knots and links as well? If I remember correctly, there are a couple of open source packages dealing with hyperbolic knots. Best regards, Simon That is one of the possible aditions for the future

[sage-devel] Re: track 12339, please review

2012-04-28 Thread mmarco
I still wonder if people who are in the knot theory community could work to port a lot of the Knot Atlas Mma code to Sage... What i had in mind was something like what sage does with the graphs: to have an editor and procedures to construct links and compute invariants from them. That would

[sage-devel] Re: Sage 5.0.beta14 and ARM(ubuntu)

2012-04-28 Thread mmarco
Will some day ARM be one of the platforms oficially supported? -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at

[sage-devel] Re: Sage 5.0.beta14 and ARM(ubuntu)

2012-04-30 Thread mmarco
Compiling sage in my tablet was so slow that i even considered emulating an arm system through qemu as an alternative (although it would probably be even slower, a pc is better suited for long and intensive cpu usage than an android device). Regarding the OS for a buildbot, i would really

[sage-devel] assume(s,'real') is broken?

2010-10-22 Thread mmarco
I have observed the following behaviour: sage: var('a,b,c,d,r,s,t,x,y') sage: assume(s,'real') sage: a=-1+r-r*cos(s) sage: b=-r*sin(s) sage: x=a+b*I sage: y=c+d*I sage: expand(x^2-y^3) -r^2*sin(s)^2 + 2*I*r^2*sin(s)*cos(s) + r^2*cos(s)^2 - c^3 - 3*I*c^2*d + 3*c*d^2 + I*d^3 - 2*I*r^2*sin(s) -

[sage-devel] Re: assume(s,'real') is broken?

2010-10-22 Thread mmarco
Here is a simple example: sage: var('a,b,y') (a, b, y) sage: assume(a,'real') sage: real_part(a) real_part(a) sage: assume(b,'real') sage: real_part(b) real_part(b) sage: real_part(a+b*I) real_part(a) - imag_part(b) It seems that the 'real' assumption is completely ignored. -- To post to this

[sage-devel] Re: What enhancements to Jmol and the Jmol in sage-notebook would interest you?...

2010-11-07 Thread mmarco
I don't know if it is already done, but it would be great to have the possibility of showing a curve as the intersection of two implicit surfaces. -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to

[sage-devel] Example worksheets contest

2010-11-14 Thread mmarco
I wrote a message in an old thread about the need of good examples in the documentation, but, i don't know why, it didn't show up. So i reproduce it here: Sorry for bringing a thread back to life several months later, but reading some other threads about publicly available examples this one

[sage-devel] Re: Example worksheets contest

2010-11-15 Thread mmarco
On 15 nov, 12:30, pang pablo.ang...@uam.es wrote: Hola! Great idea: Would you sort them into categories, or mix high school and advanced math? Well, for the moment, it is just an idea. But if there is enough consensus to make it happen, i would vote for having several categories: high school,

[sage-devel] Re: sage for newbies sage days

2010-12-10 Thread mmarco
I could be interested in attending, deppending on the location and dates. On 10 dic, 05:37, William Stein wst...@gmail.com wrote: Hi Sage-devel, If you would be interested in organizing, being involved in, attending, getting your friends to attend, etc., a Sage for Newbies Sage Days, please

[sage-devel] Real Intervals and computing function domains

2011-01-08 Thread mmarco
Hi One of the skills that is studied in high-school and college is to compute the domain of a real function of real variable given by a formula. I haven't seen that implented in sage, so i plan to do so. In ordxer to do that, i would need some way to represent real intervals (maybe with

[sage-devel] Re: Real Intervals and computing function domains

2011-01-08 Thread mmarco
for students would be a possitive addition. Thanks for the links. On 8 ene, 15:33, ma...@mendelu.cz ma...@mendelu.cz wrote: On 8 led, 12:12, mmarco mma...@unizar.es wrote: Hi One of the skills that is studied in high-school and college is to compute the domain of a real function of real

[sage-devel] Re: Sage summer school for young researchers and teachers in France

2011-01-30 Thread mmarco
¿Does it must be in France? Maybe i could organize it in Zaragoza (Northern Spain). -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at

[sage-devel] Difference of performance bewteen a core i5 and core i7?

2011-01-30 Thread mmarco
We are planning to use sage for a calculus course,and got some money to buy a dedicated computer. There will be around 20 students using it simultaneously, doing mostly simple computations on it. We have offers for an intel core i5 (4 threads) and a core i7 (8 threads), both with 16 gigs of RAM).

[sage-devel] problems with discriminants and resultants

2011-02-15 Thread mmarco
I have been trying to prepare a class on algebraic geometry, and make some exercises (involving resultants and discriminants of polynomials) in sage. I have noticed the following: 1) Discriminant is not defined for multivariate polynomial rings (handled by libsingular), they could be easily

[sage-devel] Coercion between polynomial rings

2011-02-16 Thread mmarco
Dealing with polynomial ringsi found something that seems incorrect sage: R=QQ['x','y'] sage: S=QQ['x']['y'] sage: R.has_coerce_map_from(S) True sage: S.has_coerce_map_from(R) False Even if both rings are naturally isomorphic. Moreover, the .polynomial(y) method gives preciselly the natural map

[sage-devel] Re: Coercion between polynomial rings

2011-02-16 Thread mmarco
I already new all that, but my question would be: why S.has_coerce_map_from(R) returns False? And the second question is is there a command (or an easy way to implement it) to recover QQ[x,y,z] from QQ[x][y][z] or any other similar situation? I know how to deal with these cases by hand, but i am

[sage-devel] Should .resultant() and .discriminant() return objects in the same ring or in a smaller one?

2011-02-20 Thread mmarco
I have recently opened track ticket 10799 solving some problems with coumputing resultants in univariate polynomial rings. Now i plan to implement the .discriminant() method for polynomials in multivariable rings. But i have a doubt now. The method .resultant() returns a polynomial in the same

[sage-devel] Documentation of prcedures with decorator

2011-02-28 Thread mmarco
I have been making some patch to the .resultant() procedure in /sage/ rings/polynomial/polynomial_element.pyx, and i have noticed something strange when building the documentation. If you ask for help both in the notebook or the command line, it shows fine. But when you build the html help, what

[sage-devel] Re: Geogebra (again)

2011-03-04 Thread mmarco
I have sent a proof of concept to the ticket. Still needs a lot of work, but i think it might be a valid starting point. -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more

[sage-devel] Re: Geogebra (again)

2011-03-05 Thread mmarco
Did you get any further than that? -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL:

[sage-devel] Re: Suggestions for Puiseux Expansion Implementation Location

2011-05-02 Thread mmarco
On a related subject: would it be a good idea to create a class for function germs? -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at

[sage-devel] Index of functions and procedures on the documentation

2011-06-15 Thread mmarco
Talking with some coleague he told be that he thought that sage documentation was very bad. The reason he presented was that it was very difficult to find if some function or procedure was implemented. So i have thought that it might be a good idea to have an index of functions and procedures.

[sage-devel] Re: Index of functions and procedures on the documentation

2011-06-15 Thread mmarco
The reference manual should have an index. Go to this page [1] and click on the link index in the upper right corner of your web browser. Apart from that, no other document in the standard documentation [2] have indices as exhaustive as the reference manual. If you want index entries for

[sage-devel] Re: Eigen-stuff in Sage

2011-06-22 Thread mmarco
I faced that kind of decissions when i implemented the eigen-stuff for endomorphisms (see ticket 8974). My opinion was to stick to the base field, and only look for extensions when directly requested. David Loefler argued that, for consistency reasons, it would be preferable to continue with the

[sage-devel] Re: New version of Sage virtual machine

2011-06-22 Thread mmarco
¿WOuld it be possible to modify slightly the virtualbox code to make it run directly this virtual machine (without asking which one to run and so on)? This would really be something very close to a one-click install for windows. On 22 jun, 12:24, Volker Braun vbraun.n...@gmail.com wrote: I've

[sage-devel] Re: Eigen-stuff in Sage

2011-06-23 Thread mmarco
Over R? Over C? From my limited experience in tutoring linear algebra to undergrads, I only saw confusion when eigenvalues were required to be in R. I would never go for this in any class I teach myself; I would always say that we allow any root of det(A-xI) to occur, not only real one.

[sage-devel] Re: Eigen-stuff in Sage

2011-06-23 Thread mmarco
Given that we talk about A = matrix([[0,-1,0,0],[1,0,0,0],[0,0,0,-1],[0,0,1,0]]) # no field explicitly specified do you suggest that Sage should restrict itself to eigenvalues in Z, which is the base ring of A? Do you suggest that Sage should check whether we create a proper extension of

[sage-devel] Braid Groups and Free Groups

2011-06-23 Thread mmarco
I am trying to write an implementation of the Braid group in sage, and i am finding more dificulties than expected. The reason is that the categories that would be involved have very few implemented objects. For instance, the first very basic functionality i am implementing is just the naive free

[sage-devel] Re: Braid Groups and Free Groups

2011-06-24 Thread mmarco
it to the trak, and start improving from there. Any thoughts/volunteers? On 24 jun, 02:11, David Joyner wdjoy...@gmail.com wrote: On Thu, Jun 23, 2011 at 8:02 PM, kcrisman kcris...@gmail.com wrote: On Jun 23, 2:52 pm, David Joyner wdjoy...@gmail.com wrote: On Thu, Jun 23, 2011 at 2:40 PM, mmarco

[sage-devel] Re: Reasons for upgrading

2013-04-30 Thread mmarco
After having some trouble with upgrading a couple of times, which broke my sage installation, i got used to rebuild from scratch each version. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails

[sage-devel] Re: use Sage!

2013-05-02 Thread mmarco
I have been considering writing some textbook for a course of algebraic structures with sage (combining both a theoretical and a computational approach) for a while. I don't know if i will have enough time for that, but this could be a good moment. -- You received this message because you are

[sage-devel] Use fork when several algorithms are available.

2013-05-08 Thread mmarco
A recent post reffers to ticket #14551, which proposes to use different algorithms for the same purpose, given the fact that sometimes one of them is much faster, while some other times it is just the opposite. This situation is not uncommon in sage. Think for instance in symbollic integration

[sage-devel] Re: Use fork when several algorithms are available.

2013-05-11 Thread mmarco
I see what you mean, and you might be right in this case. But anyways i keep my proposal: do you think that having an algorithm=parallel option for the cases where an optimal tuning heuristic is not possible? I can think on several situations where, even with a good tuning, you can find exceptions

[sage-devel] Re: M2 algorithm for GB is broken (?)

2013-05-20 Thread mmarco
sage-on-gentoo folks have Macaulay2-1.6 working with sage-5.9 fine. So i wonder why compilation fails inside sage-5.9. On 20 mayo, 11:06, Dima Pasechnik dimp...@gmail.com wrote: M2 spkg in Sage is so old (ver 1.1, as opposed to just released

[sage-devel] Is there a reason why Polyhedron only accepts QQ and RDF?

2013-05-20 Thread mmarco
I am trying to compute voronoy diagrams and, looking at #13517 i see that the entries should be given as rational or real doubles. The reason for that is that Polyhedron only accepts those types as entries... but then i wonder if there is a reason for that. Why does this happen? Is there any

[sage-devel] Re: M2 algorithm for GB is broken (?)

2013-05-20 Thread mmarco
So, should we remove the M2 package? I think it is definitely better to not have it, and let the user install his own copy of M2, than to have a package that does not work. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this

[sage-devel] Re: optional graph database

2013-05-23 Thread mmarco
From what i see in the nauty web page, its license is not GPL compatible, since it forbids sale for profit or application with nontrivial military significance. I guess that's the reason why it is not included as a standard package, right? On 23 mayo, 08:00, Dima Pasechnik dimp...@gmail.com

[sage-devel] Re: 3 GSoC projects for Sage

2013-06-01 Thread mmarco
I know that this is not exactly about the windows port situation, but still, it is closely related to the sage-on-windows issue: On the project ideas suggestions that were proposed by sage, there was one dedicated to writing a GUI to handle the sage installation in windows. No student decided to

[sage-devel] Re: GSoC New decoding error-correcting codes algorithm for Sage

2013-06-01 Thread mmarco
Welcome on board, Veronica. Please keep us up to date to your progress. I am your mentor, but i am sure the rest of the sage community would like to have you involved. Just a little clarification: Veronica has been selected under the umbrella of lmonade, even thoigh her work will be focused on

[sage-devel] Re: 3 GSoC projects for Sage

2013-06-01 Thread mmarco
I haven't tested it, ... Why is it suboptimal? I used the word suboptimal to reffer to the virtualbox based solution, not to the cygwin one. If by native you mean without cygwin... i am afraid that that we would be very far away from that. Not only from the sage side (at the end of the day,

[sage-devel] Re: GSoC New decoding error-correcting codes algorithm for Sage

2013-06-02 Thread mmarco
I have emailed Harald about it. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to

[sage-devel] Re: use Sage!

2013-06-03 Thread mmarco
I definitely like the idea of making our own series. On 3 jun, 20:22, David Kirkby david.kir...@onetel.net wrote: On 6 May 2013 02:00, rjf fate...@gmail.com wrote: On Thursday, May 2, 2013 1:27:30 PM UTC-7, William wrote: Hi Sage-Developers, There is a big series of small

[sage-devel] Re: use Sage!

2013-06-04 Thread mmarco
Yes, real is usually better than imaginary. And a real one would be even better.  ;-) -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to

[sage-devel] Re: Using ssh for port-forwarding

2013-06-07 Thread mmarco
On a different (but related) subject: is it possible to interface instances of Maple/Mathematica/etc on a different machine through ssh? It would be a good thing to have, for example, for people using the virtualbox appliance, but have these programs installed on their host machine. -- You

[sage-devel] Re: Using ssh for port-forwarding

2013-06-08 Thread mmarco
not.rea...@online.de wrote: mmarco wrote: On a different (but related) subject: is it possible to interface instances of Maple/Mathematica/etc on a different machine through ssh? That /should/ transparently work if you just create a wrapper script (in $SAGE_LOCAL/bin/, say) with the same

[sage-devel] A debugging tool

2013-06-08 Thread mmarco
I have writen a small pyqt program to help me debug during sage development (and work). It is meant to be used together with the kate editor and its embedded konsole (although it can be probably be adapted to other developping environments that support a dbus interface). What it does is to parse

[sage-devel] Re: Using ssh for port-forwarding

2013-06-13 Thread mmarco
Thanks, that seems to work. On 12 jun, 04:02, Nicolas M. Thiery nicolas.thi...@u-psud.fr wrote: On Sat, Jun 08, 2013 at 03:54:58AM -0700, mmarco wrote: I tried to do that, and it gives some problems. I don't know why, but it seems that if you launch maple through ssh, you don't get

[sage-devel] Re: Inheritance from Parent and QuotientRing_nc leads to a TypeError

2013-07-06 Thread mmarco
Maybe we should make a plan to move old code from ParentWithGens to Parent? A sage days dedicated to this would be a good idea? And while we are at it, try to make a better designs for the generators issue. -- You received this message because you are subscribed to the Google Groups

[sage-devel] Re: SageManifolds: differential geometry and tensor calculus in Sage

2013-07-11 Thread mmarco
It looks very good. Just one remark: i think that the different functions you define (Lie, xdef...) should be methods better than external functions. In general, the use seems a bit confuding to me... i would say that it looks much more mathematica-like than pythonic. -- You received this

[sage-devel] Re: Is there a reason for g_algebras not working over rings with parameters?

2013-07-16 Thread mmarco
Ok, i investigated a little bit, and found one source of problems. But it revealed a deeper problem: plural interface does not allow fields with parameters. I opened ticket #14886. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe

[sage-devel] Re: Sage on the OpenPandora

2013-07-18 Thread mmarco
How did you manage to compile it? you did so in the pandora device itself? it should have taken a lot of itime. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to

[sage-devel] Re: importing

2013-07-22 Thread mmarco
Some things i would like to have: Orlik-Solomon Algebras Module of logarithmic derivations (and specially, a way to check if it is free). Or at least, its Betti numbers. Maybe arrangements in projective spaces? For the case of line arrangements, wiring diagrams, and fundamental group. -- You

[sage-devel] Re: GSoC New decoding error-correcting codes algorithm for Sage

2013-08-07 Thread mmarco
I just received a notification from te GSoC staff. Veronica received a negative evaluation (against my opinion), and she asked for an independent review. As result of this review, her negative evaluation was reversed, on the condition that a new mentor is assigned to her. So we need a

[sage-devel] Re: GSoC New decoding error-correcting codes algorithm for Sage

2013-08-08 Thread mmarco
The current mentors are Irene Marquez, Edgar Martinez, and myself. I was in charge of the sage development part, and they were in charge of the theoretical part (since they are the experts in codiing theory, and the developpers of some of the algorithms to be implemented). The condition

[sage-devel] Re: GSoC New decoding error-correcting codes algorithm for Sage

2013-08-08 Thread mmarco
Finally Punarbasu Purkayatsha has volunteered and Burcin Erocal considered that he is the appropriate person to take care of the mentorship from now on. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop

[sage-devel] Re: Magma

2013-08-31 Thread mmarco
About the importance of being free software (or more precisely: te perception of it being important for the users), i thought about the possibility to make easier for the user to modify its own version of sage. Not that it is hard (for people with some knowledge on software development) as it

[sage-devel] Re: Magma

2013-09-05 Thread mmarco
So, let me rephrase the question: do you think it could be reasonably simple to implement? It can cause some issues (think for example in multi-user servers), but anyways i think we could give it a try as an optional feature. -- You received this message because you are subscribed to the

[sage-devel] Re: How can we improve 3d graphics in sage?

2013-09-16 Thread mmarco
Well, i don't know if there is any graphic designer that uses Sage, but i do use blender. I agree with you, Blender is definitely overkill for sage graphics. Some .stl or .ply exporter for sage would be nice though (an much easyer to implement). El sábado, 14 de septiembre de 2013 15:28:08

[sage-devel] Passing mpfr arrays to a c library

2013-09-25 Thread mmarco
We are working on a c library to do homotoy continuation of polynomial roots using interval arithmetic. Our idea is to make a spkg with it, and write some functions in the sage library that would use it (in particular, to compute the fundamental group of the complement of an algebraic curve).

[sage-devel] Re: Passing mpfr arrays to a c library

2013-09-25 Thread mmarco
) On Wednesday, September 25, 2013 10:08:24 AM UTC+1, mmarco wrote: We are working on a c library to do homotoy continuation of polynomial roots using interval arithmetic. Our idea is to make a spkg with it, and write some functions in the sage library that would use it (in particular, to compute

[sage-devel] Re: Passing mpfr arrays to a c library

2013-09-27 Thread mmarco
hooks kept by numpy). Not sure I can reproduce details here. On Wednesday, September 25, 2013 5:02:55 PM UTC+1, mmarco wrote: I see, thanks. So, if i understand it correctly, i import my_c_function and then, to call it, i create the memory space for the array, copy

[sage-devel] Is this a bug or is it intended?

2013-10-02 Thread mmarco
97 97 I have found the following behaviour: a=QQbar.zeta(3) F=QQ[a] h=F.embeddings(QQbar)[0] F._unset_embedding() F.register_embedding(h) F.coerce_embedding() QQbar._unset_coercions_used() QQbar.register_coercion(h) QQbar.convert_map_from(F) Conversion map: From: Number Field in a

[sage-devel] Re: Is this a bug or is it intended?

2013-10-02 Thread mmarco
I get it, thanks. El miércoles, 2 de octubre de 2013 18:12:42 UTC+2, Nils Bruin escribió: Your example looks suspicious because you're calling _unset_embeddings and then install an embedding. That's explicitly warned against in the documentation. What you're finding is that

[sage-devel] Help with pickling fail.

2013-11-19 Thread mmarco
I have writen some basic implementation of ideals for Laurent polynomial rings (ticket #15437 ). It seems to work fine, but i don't know why, pickling fails: sage: L=LaurentPolynomialRing(QQ,3,'t') sage: loads(dumps(L)) ---

[sage-devel] Re: Help with pickling fail.

2013-11-19 Thread mmarco
That didn't solve the problem. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to

[sage-devel] Re: Help with pickling fail.

2013-11-19 Thread mmarco
be computed (because it depends on _repr_) On Tuesday, November 19, 2013 11:52:00 AM UTC-5, mmarco wrote: That didn't solve the problem. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails

[sage-devel] Re: hacker news thing - mathematica on rasberry pi

2013-11-22 Thread mmarco
What happened with the plan of buying some arm machine to work as a buildbot? My experience trying to compile sage on arm machines has been painful. It took two weeks to compile it in my android tablet (under an ubuntu chroot), and it overheated so much that the device got damaged. Anyways,

[sage-devel] Re: Python as build-time dependency

2014-01-10 Thread mmarco
So we would use python to run the buildiing scripts for the sage components... including python itself? Maybe it is better in the long term, but it sounds weird. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and

[sage-devel] Re: upcoming Sage Days

2014-01-22 Thread mmarco
I am not sure about my abilities to solve bugs, but i would sure like to try. My problem is that i need a long paperwork to go to USA, so i cannot attend on short notice. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this

Re: [sage-devel] Re: upcoming Sage Days

2014-01-26 Thread mmarco
I would like to attend to Seattle in June. As for the differential geometry, it is not my field of expertise, but i am definitely in. Besides the manifold package, i would like to implement a class for commutative graded differential algebras (although it is not really differential geometry, i

[sage-devel] Re: GSoC projects

2014-01-30 Thread mmarco
I would like to mentor some projects this year again. The virtual machine GUI sounds like a good fit. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to

[sage-devel] Re: GSoC projects

2014-01-30 Thread mmarco
I am tempted to make a poll bewteen the math instructors/researchers asking them what would they like to be improved in sage, and use that information for a project proposal. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from

[sage-devel] Re: ARM support

2014-02-05 Thread mmarco
All recent (i.e. in the last, 2? years) arm processors have hard float support, right? In that case i say it is not a bad idea to not support soft float, since it only affects old hardware. -- You received this message because you are subscribed to the Google Groups sage-devel group. To

[sage-devel] Re: Sage accepted for GSoC 2014

2014-02-24 Thread mmarco
Good to hear. Do we already know how many students will be assigned? -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To

[sage-devel] Re: Sage accepted for GSoC 2014

2014-02-25 Thread mmarco
I would be happy to mentor a student in a knot theory related project in sage. I had mainly two ideas: First idea is to write a class for knots/links. This class should be able to translate between the different possible representations of links (Gauss codes, 3d curves, braid closure...) and

Re: [sage-devel] Re: Sage accepted for GSoC 2014

2014-02-26 Thread mmarco
and the Mathematica package creating it is the state of the art. Does SnapPy now really have all that combinatorial stuff? I think that at the very least a good wrapper allowing for use of *any* robust backend for knots would be a great contribution to Sage. mmarco seems to have a good sense

[sage-devel] Re: Sage accepted for GSoC 2014

2014-02-26 Thread mmarco
escribió: On 2014-02-25, mmarco mma...@unizar.es javascript: wrote: I would be happy to mentor a student in a knot theory related project in sage. I had mainly two ideas: First idea is to write a class for knots/links. This class should be able to translate between the different

Re: [sage-devel] Re: Sage accepted for GSoC 2014

2014-02-26 Thread mmarco
Of course, i forgot to mention the already mentioned knotscape, snappy and knotplot. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an email to

[sage-devel] Re: Sage accepted for GSoC 2014

2014-02-26 Thread mmarco
In my case, i needed to also change the knostcape script to point to the actual directory, instead of a directory of /tmp -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop receiving emails from it, send an

[sage-devel] Error compiling dev version

2014-03-08 Thread mmarco
, edit_in_place File /home/mmarco/sagedevel/sage/local/var/tmp/sage/build/atlas-3.10.1.p7/configuration.py, line 182, in module fortran_version = try_run('$FC --version') File /home/mmarco/sagedevel/sage/local/var/tmp/sage/build/atlas-3.10.1.p7/configuration.py, line 68, in try_run

[sage-devel] Re: Building Sage with Cygwin 32 bit

2014-03-11 Thread mmarco
Is it possible now to build sage on cygwin and obtain something that can be distributed? In that case, maybe we should include that in the download section. -- You received this message because you are subscribed to the Google Groups sage-devel group. To unsubscribe from this group and stop

[sage-devel] Re: Building Sage with Cygwin 32 bit

2014-03-11 Thread mmarco
That is what singular does, right? El martes, 11 de marzo de 2014 11:23:57 UTC+1, Dima Pasechnik escribió: On 2014-03-11, Jean-Pierre Flori jpf...@gmail.com javascript: wrote: On Tuesday, March 11, 2014 10:20:08 AM UTC+1, mmarco wrote: Is it possible now to build sage on cygwin

[sage-devel] Re: How to define a new ring class ?

2014-03-12 Thread mmarco
Since the ring you want will be an algebra over the reals, the best fit for base ring would be the reals. Now, since it is impossible to represent the real field in practice, there are different possible solutions in sage: RR if you don't care about the lack of exactness QQ or some extension

Re: [sage-devel] Re: How to define a new ring class ?

2014-03-13 Thread mmarco
2014-03-12 21:29 UTC+01:00, mmarco mma...@unizar.es javascript:: Since the ring you want will be an algebra over the reals, the best fit for base ring would be the reals. Now, since it is impossible to represent the real field in practice, there are different possible solutions

Re: [sage-devel] Re: How to define a new ring class ? [We need a class representing genuine real field]

2014-03-14 Thread mmarco
I would advocate that RLF is a very good approximation of what should be RR. Perhaps one good direction to take is to try to make RLF smarter and contains all constants from pi to cos(42^e). Somehow, it already does (i.e. internally it keeps track of their symbollic nature): {{{

Re: [sage-devel] Re: How to define a new ring class ? [We need a class representing genuine real field]

2014-03-14 Thread mmarco
This is half good, I am happy that RLF wraps symbolic constants. But, first of all there can not be any reasonable coercion from SR to RLF as SR is much bigger. Secondly, SR is not consistent with evaluation sage: cos(1.).parent() Real Field with 53 bits of precision sage:

Re: [sage-devel] Re: How to define a new ring class ? [We need a class representing genuine real field]

2014-03-14 Thread mmarco
Any number cos(rational x pi) is algebraic and equality of algebraic numbers is decidable. Moreover, it is not because something is undecidable that Sage should return a wrong answer. In that case, it would be good to have a third party in comparison (either returning Unknown or

[sage-devel] Re: solving numerically polynomial equations

2014-03-17 Thread mmarco
I am working, together with a colleague, on a library to compute provable homotopy continuation, using interval arithmetic. We need to write something new because (AFAIK): a) the available software does not provide provable results i.e. in some critical cases they are not granted to give

[sage-devel] Re: solving numerically polynomial equations

2014-03-17 Thread mmarco
: On Monday, March 17, 2014 6:05:58 AM UTC-4, mmarco wrote: I am working, together with a colleague, on a library to compute provable homotopy continuation, using interval arithmetic. We need to write something new because (AFAIK): a) the available software does not provide provable results i.e

Re: [sage-devel] Notebooks: Show running vs. calculating sheets

2014-04-16 Thread mmarco
So, what is the plan for the future? Switch from the current notebook to something like the cloud interface? Will William release that part under the GPL? El miércoles, 16 de abril de 2014 10:24:29 UTC+2, P Purkayastha escribió: Some of these concerns are already addressed in cloud.sagemath.

[sage-devel] Error compiling ncurses

2014-04-23 Thread mmarco
) bash: symbol lookup error: /home/mmarco/sagedevel/sage/local/lib/libncurses.so.5: undefined symbol: _nc_putchar real0m0.001s user0m0.000s sys 0m0.001s Error installing package

[sage-devel] Re: Error compiling ncurses

2014-04-23 Thread mmarco
That seemed to work, thanks. El miércoles, 23 de abril de 2014 18:24:57 UTC+2, Volker Braun escribió: Its not a problem with ncurses but with your bash crapping out if LD_LIBRARY_PATH is set.Delete the Sage ncurses libraries and continue building. -- You received this message because

[sage-devel] Re: vote: include pip with sage

2014-04-24 Thread mmarco
Can it handle non-python packages? Or the idea is to use it only for python packages that need no compilation at all? El jueves, 24 de abril de 2014 00:46:50 UTC+2, William escribió: Hi, There used to be a lot of confusion about which package manager / installer one should use with python

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