On Jul 16, 2009, at 1:37 PM, kcrisman wrote:
> On Jul 16, 3:54 pm, Ethan Van Andel wrote:
>> Sorry to keep spamming sage-support.
>>
>> I have a class instance m with a method riemann_map so that
>> m.riemann_map(z) returns a (numpy) complex value. I want to do a
>> complex_plot of that function
Hi all,
If I DON'T use notebook and type a simple program like,
sage: t,s=var('t,s')
sage: show(laplace(exp(-3*t),t))
an evince window pops up with the error message
"Unable to open document
File type TeX DVI document (application/x-dvi) is not supported"
prominently displayed. I guess it is
Thank you.
2009/7/16 Marshall Hampton
>
> I'm not quite sure what you want, but for example
>
> sage: B = sqrt(1000)
> sage: floor(B)
> 31
>
> would give you the integer part (rounded down since its floor). The
> round() function might be what you want instead (round(B) is 32.0).
>
> -Marshall
William Stein wrote:
> Install GCC >=4.1.x.
>
> -- William
Is that a requirement? Someone said yesterday 3.4 was ok.
Somebody tried yesterday to build on OpenSolaris with gcc 3.4.3
(compiler in /usr/sfw/bin) and it failed due to what I believe is an
MPIR failure to detect the Sun linker. (
On Thu, Jul 16, 2009 at 10:56 AM, RaoulV wrote:
>
> Hi All,
> I have a problem while trying to build Sage version 4.1 from source on
> Centos 4.7:
>> uname -a
> Linux linux27.dom 2.6.9-67.0.22.ELsmp #1 SMP Wed Jul 23 17:24:12 EDT
> 2008 x86_64 x86_64 x86_64 GNU/Linux
>> cat /etc/issue
> CentOS rel
On Thu, Jul 16, 2009 at 12:04 AM, Pablo Angulo wrote:
>
> Hello,
> I'm preparing a live dvd with a lot of software for next year students,
> and it should be based on the LTS ubuntu hardy, for a couple of reasons.
> There are no binaries for hardy in the mirrors, but there have been
> binaries i
On Jul 16, 3:54 pm, Ethan Van Andel wrote:
> Sorry to keep spamming sage-support.
>
> I have a class instance m with a method riemann_map so that
> m.riemann_map(z) returns a (numpy) complex value. I want to do a
> complex_plot of that function. If I try:
> complex_plot(m.riemann_map,(-2,2),(-2
Sorry to keep spamming sage-support.
I have a class instance m with a method riemann_map so that
m.riemann_map(z) returns a (numpy) complex value. I want to do a
complex_plot of that function. If I try:
complex_plot(m.riemann_map,(-2,2),(-2,2)) I get this error:
...
File "fast_eval.pyx", line 1
What is the "official" way to correctly divide 2 integer variables in
a %cython cell in a sage notebook? I know that in general you'd do
"from __future__ import division" but it looks like the notebook
doesn't like __future__ imports.
I have an simple workaround, so this isn't urgent, I'd just li
I have added a patch that fixes this, available at:
http://trac.sagemath.org/sage_trac/raw-attachment/ticket/6542/trac_6542_tachyon_tostr.patch
Since tachyon is currently broken on all systems in sage-4.1, I fixed
the immediate problem rather than taking the time to improve the
testing of tachyo
Hi All,
I have a problem while trying to build Sage version 4.1 from source on
Centos 4.7:
> uname -a
Linux linux27.dom 2.6.9-67.0.22.ELsmp #1 SMP Wed Jul 23 17:24:12 EDT
2008 x86_64 x86_64 x86_64 GNU/Linux
> cat /etc/issue
CentOS release 4.7 (Final)
Kernel \r on an \m
CPU: Intel(R) Core(TM)2 Duo
If phcpack does not report any 'failure' solutions in
classified_solution_dicts(), then it should have found all the roots.
But the groebner methods are preferable if you are interested in exact
solutions.
-Marshall
On Jul 16, 11:29 am, Doug wrote:
> > The last element of that Groebner basis is
> The last element of that Groebner basis is a univariate polynomial in
> x2, so it is relatively easy to analyze its solutions. There is one
> triple root at x2=0, and then four others which are presumably the
> four you are thinking of. Once you have a value for x2, you can
> substitute it int
On Jul 16, 1:00 pm, Taxman wrote:
> T.is_isomorphic(P)
> gives the desired result of true.
Ah sorry,
P=graphs.PetersenGraph()
being the P in question if anyone was curious.
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On Jul 16, 12:26 pm, javier wrote:
> You need to define a function on pair of vertices that returns "True"
> if there should be an edge.
>
> Something like
>
> X = Set([1,2,3,4,5])
> V=(X.subsets(2))
>
> def s(a,b):
> return a.intersection(b).cardinality()==0
>
> T = Graph([V, s])
>
> should
Ok, my own mistake. The problem is that V (the set of sets) needs to
be turned into a list. This works for me now:
X = Set([1,2,3,4,5])
V = list(X.subsets(2))
def s(a,b):
return a.intersection(b).cardinality()==0
T = Graph([V, s])
Hope that helps
Cheers
Javier
On Jul 16, 5:26 pm, javier
The last element of that Groebner basis is a univariate polynomial in
x2, so it is relatively easy to analyze its solutions. There is one
triple root at x2=0, and then four others which are presumably the
four you are thinking of. Once you have a value for x2, you can
substitute it into the othe
You need to define a function on pair of vertices that returns "True"
if there should be an edge.
Something like
X = Set([1,2,3,4,5])
V=(X.subsets(2))
def s(a,b):
return a.intersection(b).cardinality()==0
T = Graph([V, s])
should work, but I am getting the following weird error in sage 4.
I confess I'm not a mathematician (I'm an economist) and it's been
almost 25 years since I took a basic course in abstract algebra. But
this is interesting. From the wikipedia page on Grobner bases, it
seems I should be able to compute solutions to the system based on the
Grobner basis, but I ca
What do I import it as? if I try "import module my_stuff" (the folder
that I saved it in, and added to the package list) it tells me there's
no module of that name.
If I try "import my_stuff.interpolators" (The extension name and the
name of the .pyx file) it tells me the same thing.
Thanks,
Eth
Hi, I'm trying to construct an odd graph (http://en.wikipedia.org/wiki/
Odd_graph).
My first thought was to use
X = Set([1,2,3,4,5])
V=(X.subsets(2))
to get the desired subsets for the vertex set. That does get the
subsets, but converting it into a graph doesn't seem to work.
T=Graph(V) gives:
net
I'm not quite sure what you want, but for example
sage: B = sqrt(1000)
sage: floor(B)
31
would give you the integer part (rounded down since its floor). The
round() function might be what you want instead (round(B) is 32.0).
-Marshall Hampton
On Jul 16, 10:05 am, Santanu Sarkar
wrote:
> Supp
Hi!
On 16 Jul., 16:07, Ethan Van Andel wrote:
> Thank you, that did the trick. However, while everything compiles now,
> I cant use my stuff in the notebook. I've run sage -b and I'm pretty
> sure my module_list.py and setup.py entries are correct. Do I have to
> import or include anything?
AF
Suppose we want to find just integer part of square root 1000. Say
B=sqrt(1000). Then how can I use digits function i,e. B.digits() to find the
bits of B.
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To post to this group, send email to sage-support@googlegroups.com
To unsubscribe from t
On Fri, Jul 17, 2009 at 1:01 AM, Simon King wrote:
>
> Hi!
>
> On 16 Jul., 10:51, "Dr. David Kirkby" wrote:
> ...
>> I've also found 'nohup' useful if running a program from a remote
>> location, as the session does not abort if the connection dies.
>
> "nohup" keeps your process alive if the con
Hi!
On 16 Jul., 10:51, "Dr. David Kirkby" wrote:
...
> I've also found 'nohup' useful if running a program from a remote
> location, as the session does not abort if the connection dies.
"nohup" keeps your process alive if the connection dies, but you can
not interact with your process. Hence,
Does this help any?
sage: R = PolynomialRing(QQ, 2, 'x1,x2', order='lp')
sage: x1,x2 = R.gens()
sage: f1 = 1/2*((x1^2 + 2*x1 - 4)*x2^2 + 2*(x1^2 + x1)*x2 + x1^2)
sage: f2 = 1/2*((x1^2 + 2*x1 + 1)*x2^2 + 2*(x1^2 + x1)*x2 - 4*x1^2)
sage: I = (f1,f2)*R; I
Ideal (1/2*x1^2*x2^2 + x1^2*x2 + 1/2*x1^2 +
Thank you, that did the trick. However, while everything compiles now,
I cant use my stuff in the notebook. I've run sage -b and I'm pretty
sure my module_list.py and setup.py entries are correct. Do I have to
import or include anything? Do my entries have to be in the proper
alphabetical order?
On Thu, Jul 16, 2009 at 11:23 PM, kcrisman wrote:
>> Sage worksheets are compressed using tar and bzip2. Say your worksheet
>> is called myworksheet.sws, then this would uncompress it:
>>
>> $ tar -jxf myworksheet.sws
>>
>> You then get a directory containing the worksheet data.
>>
>
> Probably
On Jul 16, 9:07 am, Minh Nguyen wrote:
> On Thu, Jul 16, 2009 at 10:57 PM, kcrisman wrote:
>
>
>
> > 2) .sws files are really just some kind of zip file. So unzipping it
> > will reveal the folder for the worksheet, and you can then manually
> > remove the snapshots (assuming you don't need t
On Thu, Jul 16, 2009 at 10:57 PM, kcrisman wrote:
> 2) .sws files are really just some kind of zip file. So unzipping it
> will reveal the folder for the worksheet, and you can then manually
> remove the snapshots (assuming you don't need them currently) and then
> rezip it. I can't remember i
Dear Rolandb,
I'm not sure what to do about uploading the large .sws files - I'm not
surprised it times out, based on my experience. However, what you
might want to do is one of the two following things:
1) Go back to wherever your original worksheet came from and run the
script at http://trac.
Works OK for me on a mac running 4.0.1, but doesn't work on sagenb
running 4.1, so I would guess this is an issue with 4.1.
I have made this trac ticket #6542:
http://trac.sagemath.org/sage_trac/ticket/6542
-Marshall Hampton
On Jul 16, 5:44 am, Paul Sargent wrote:
> Hi all,
>
> I've just tried
Hi all,
I've just tried to re-run an old worksheet that uses Tachyon to
raytrace an image. I believe it worked a few versions ago, but on
version 4.1 under Mac OS X (64 bit intel) I no longer get any output.
No error. No image.
Is anybody else having this?
t6 = Tachyon(camera_center=(0,-4
On Jul 14, 2009, at 9:05 AM, Doug wrote:
> Hmm. I've also had trouble interpreting what assume() affects, and I'm
> glad to hear that I'm not the only one. What Robert says here helps a
> lot, but is there anything written anywhere else that goes into a bit
> more detail? I'm sure there's more
On Jul 14, 2009, at 3:35 PM, William Stein wrote:
> 2009/7/14 Carlos Córdoba :
>> Thanks John, I'd seen Python comprehensions before, but since I
>> was trying
>> to do all in a one-liner, I think I overlooked your elegant and
>> simple
>> solution. One comprehension at a time is quite neat,
Laurent wrote:
> Rolandb ha scritto:
>> Hi,
>> I’m away for three weeks and I want to let my PC doing some
>> calculations during 20 days.
>> Now, I’m running the risk that after a few days the computer stops et
>> cetera, so that the results are lost.
>>
>
> Among others precautions, you shou
You need include_dirs = numpy_include_dirs in your Extension(...)
declaration in module_list.py.
- Robert
On Jul 15, 2009, at 11:23 AM, Ethan Van Andel wrote:
>
> I want to include some of my cython code as a sage module. I followed
> the directions for adding the .pyx file to the sage librar
If you want to time running something just once, see cputime() and
walltime().
- Robert
On Jul 15, 2009, at 12:12 PM, Gustavo Rama wrote:
> Thanks, I'll try it.
> Cheers Gustavo
>
> On Jul 14, 10:42 pm, Simon King wrote:
>> Hi Gustavo!
>>
>> On 15 Jul., 03:17, Gustavo Rama wrote:
>>
>>> Bu
Hello,
I'm preparing a live dvd with a lot of software for next year students,
and it should be based on the LTS ubuntu hardy, for a couple of reasons.
There are no binaries for hardy in the mirrors, but there have been
binaries in the past.
I tried to compile the sources yesterday. It failed,
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