Updates:
Status: Fixed
Comment #17 on issue 2641 by skirpic...@gmail.com: limit() doesn't always
pass on to gruntz() when it should
http://code.google.com/p/sympy/issues/detail?id=2641
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Updates:
Status: Fixed
Comment #6 on issue 3461 by skirpic...@gmail.com: Incorrect Limit
http://code.google.com/p/sympy/issues/detail?id=3461
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Comment #37 on issue 3809 by dana.jac...@gmail.com: isprime can be faster
http://code.google.com/p/sympy/issues/detail?id=3809
I've been working on primality tests and proofs for a Perl module, so this
is something I've been looking at a lot recently. Here are my long-winded
thoughts, with
Comment #44 on issue 2482 by skirpic...@gmail.com: Stop bundling mpmath
http://code.google.com/p/sympy/issues/detail?id=2482
https://github.com/sympy/sympy/pull/2192
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Comment #38 on issue 3809 by asmeu...@gmail.com: isprime can be faster
http://code.google.com/p/sympy/issues/detail?id=3809
Thanks for the write up. I didn't realize that gmpy2 has this
functionality. We already support gmpy and gmpy2 as optional dependencies
to make the polys faster. We
Comment #6 on issue 2866 by smi...@gmail.com: Pretty printing of empty
matrices
http://code.google.com/p/sympy/issues/detail?id=2866
hmm...good question (and no good answer from me)
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Comment #39 on issue 3809 by dana.jac...@gmail.com: isprime can be faster
http://code.google.com/p/sympy/issues/detail?id=3809
I can check the gmpy2 functions -- the underlying code should be solid
since it was written for a PRIMO validator that has been used a lot in the
last two years,
Updates:
Status: Fixed
Comment #4 on issue 2934 by skirpic...@gmail.com: gosper_sum return NaN
http://code.google.com/p/sympy/issues/detail?id=2934
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Comment #45 on issue 2482 by ondrej.c...@gmail.com: Stop bundling mpmath
http://code.google.com/p/sympy/issues/detail?id=2482
Hi Tadej,
what you wrote also applies to Debian. I think we should make it so that if
people really want to depend on mpmath externally have the option to do so
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Labels: Type-Defect Priority-Medium Combinatorics
New issue 3898 by asmeu...@gmail.com: sift
http://code.google.com/p/sympy/issues/detail?id=3898
I just saw this:
Comment #46 on issue 2482 by asmeu...@gmail.com: Stop bundling mpmath
http://code.google.com/p/sympy/issues/detail?id=2482
Actually, we need to drop 2.5 to use relative imports, because import *
doesn't work with it due to some bug (if I remember correctly).
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Comment #47 on issue 2482 by tadej.ja...@gmail.com: Stop bundling mpmath
http://code.google.com/p/sympy/issues/detail?id=2482
Sergey,
thanks for stepping in and reviving this issue by preparing a pull request!
I like Ondřej's proposed approach. Indeed, this will simplify sympy's
maintenance
Status: New
Owner:
Labels: Type-Defect Priority-Medium
New issue 3899 by dutu8...@gmail.com: error: package directory 'sympy' does
not exist
http://code.google.com/p/sympy/issues/detail?id=3899
While installing sympy i get following error:
C:\sympy-0.7.2-py3.2\setup.py install
Comment #1 on issue 3899 by asmeu...@gmail.com: error: package
directory 'sympy' does not exist
http://code.google.com/p/sympy/issues/detail?id=3899
Does it work if you change to the sympy-0.7.2-py3.2 directory first (using
dir)?
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Comment #2 on issue 3899 by dutu8...@gmail.com: error: package
directory 'sympy' does not exist
http://code.google.com/p/sympy/issues/detail?id=3899
I'm sorry but I don't really understand what you mean by that.
Copying 'sympy-0.7.2-py3.2' or the content from it somewhere else?
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Comment #6 on issue 3222 by supp...@mooncoder.com: Memory problems with the
cache
http://code.google.com/p/sympy/issues/detail?id=3222
Documentation is one thing, but there is something more important. The
cache mechanism can actually hurt sympy because for some people, sympy
crashes or
Comment #7 on issue 3222 by asmeu...@gmail.com: Memory problems with the
cache
http://code.google.com/p/sympy/issues/detail?id=3222
I completely agree. There was some discussion on the mailing list about
this issue a month or two ago. The idea is to make the cache more local, so
that it
Comment #3 on issue 3899 by asmeu...@gmail.com: error: package
directory 'sympy' does not exist
http://code.google.com/p/sympy/issues/detail?id=3899
No, I mean making sympy-0.7.2-py3.2 your working directory, so that the
command is just python setup.py install.
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Comment #8 on issue 3222 by supp...@mooncoder.com: Memory problems with the
cache
http://code.google.com/p/sympy/issues/detail?id=3222
No, I don't have enough experience in python (yet :-) ).
Comment #9 on issue 3222 by asmeu...@gmail.com: Memory problems with the
cache
http://code.google.com/p/sympy/issues/detail?id=3222
Oh wow, that's too complicated. Though actually we only care about the
memory from objects that have a refcount of 1.
I guess just counting the number of
Hi Mateusz and all,
refine_root() doesn't work with non-squarefree polynomials. Unfortunately
it's not written in the documentation. Remove root multiplicities with
sqf() and then proceed with your original approach, e.g.:
In [8]: sqf_list(f)
Out[8]:
⎛ ⎡⎛ 2 ⎞⎤⎞
⎝1, ⎣⎝x -
Hello everybody, bonjour tout le monde,
I wonder if there's a way to export sympy plots to svg, as savefig with
matplotlib ?
Actually my aim is to convert this svg file to tkz from inkscape...
thank you,
merci d'avance,
alex
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The plot object has a `save` method. Calling it with a filename ending
on `.svg` should be enough if you use the matplotlib backend. The
capabilities of the plotting module depend a lot on the backend that
you are using.
a=plot(...)
a.save(*.svg)
On 19 June 2013 09:32, a.ja...@gmail.com
Thank you, it works.
I only tried savefig...
Sorry for the noise.
Le mercredi 19 juin 2013 11:18:07 UTC+2, Stefan Krastanov a écrit :
The plot object has a `save` method. Calling it with a filename ending
on `.svg` should be enough if you use the matplotlib backend. The
capabilities of the
Hi,
This topic is extensively discussed earlier in mailing list. What I
have here [0] is essentially correct though inefficient implementation
of addition and subtraction operations for sparse matrix. This is the
time where I need to think about adding domains support to matrices. I
can think of
I have a query regarding as_numer_denom.
Example:
a, b = symbols(a b)
eq = a*y/x**2 + 2*b*y - b/x
eq.as_numer_denom
(a*x*y + 2*b*x**3*y - b*x**2, x**3)
Shouldn't there be one x less in the numerator and denominator?
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as_numer_denom doesn't do any canceling. It is designed to be the
fastest way to convert a rational function into a product of
polynomials. If you want it canceled, you can call cancel on the
result.
Aaron Meurer
On Wed, Jun 19, 2013 at 9:06 AM, Manoj Kumar
manojkumarsivaraj...@gmail.com wrote:
On Tue, Jun 18, 2013 at 11:23 PM, Thilina Rathnayake
thilina.r...@gmail.com wrote:
When we ask the user to specify the parameter to be used, what should
be the input? should it be a symbol or a string which contain the symbol
to be used. What I am asking is whether we should use,
var(t)
Inputting the parameter as a keyword to the solver seems like an
extremely fragile solutions. What if we need two parameters? What if
we do not need any? How we add appropriate assumptions to the
parameter (integer or whatever)?
Moreover, this would create two divergent styles for the different
On Wed, Jun 19, 2013 at 9:39 AM, Stefan Krastanov
krastanov.ste...@gmail.com wrote:
Inputting the parameter as a keyword to the solver seems like an
extremely fragile solutions. What if we need two parameters? What if
we do not need any?
I think for linear equations it is clear from the
Can anyone recommend a good review of computer algebra software other than
wikipedia?
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On Wed, Jun 19, 2013 at 9:25 AM, Saurabh Jha saurabh.j...@gmail.com wrote:
Hi,
This topic is extensively discussed earlier in mailing list. What I
have here [0] is essentially correct though inefficient implementation
of addition and subtraction operations for sparse matrix. This is the
time
I was thinking about adding what you said in above levels. In bottom
levels, I thought of passing domains explicitly to functions after
they are determined from above levels. The lower level functions will
form the basis of functions/methods at upper levels. I am still not
sure if this is the
Ondrej: That's exactly what I am doing right now.
I am just implementing the low level functionalities which just solves
the equation and for the time being I am returning solutions as a set of
tuples.
I think the only assumption on the parameters would be that they
are Integers. Sometimes they
On Wed, Jun 19, 2013 at 12:41 PM, Matthew Rocklin mrock...@gmail.com wrote:
Can anyone recommend a good review of computer algebra software other than
wikipedia?
Do you mean online? There is
http://orms.mfo.de/
http://www.symbolicnet.org/toc.html
and the rosetta stone
Inputting the parameter as a keyword to the solver seems like a
fragile solutions. What if we need two parameters? What if we do not
need any? How we add appropriate assumptions to the parameter (integer
or whatever)?
Moreover, this would create two divergent styles for the different
solvers: why
sorry for the dupe, problem with my drafts
On 19 June 2013 19:14, Stefan Krastanov krastanov.ste...@gmail.com wrote:
Inputting the parameter as a keyword to the solver seems like a
fragile solutions. What if we need two parameters? What if we do not
need any? How we add appropriate
Hello all,
As we all know, this is the first week of GSOC and I'm working on a Lie
algebra module. My blog is http://meclark256.wordpress.com/
Specifically I'd like to generate some discussion on the issue that I just
wrote about in this week's blog entry, on actual physical commutation
On Wed, Jun 19, 2013 at 3:31 PM, Mary Clark mary.spritel...@gmail.com wrote:
Hello all,
As we all know, this is the first week of GSOC and I'm working on a Lie
algebra module. My blog is http://meclark256.wordpress.com/
Specifically I'd like to generate some discussion on the issue that I
Just a question on terminology:
Are you talking about general commutation relations or just those for the
standard lie algebra generators?
Sorry, but could you clarify what you mean? For instance, what I'm saying
is that su(2), for example, has a basis consisting of 3 elements, say u1,
On Wed, Jun 19, 2013 at 3:53 PM, Mary Clark mary.spritel...@gmail.com wrote:
Just a question on terminology:
Are you talking about general commutation relations or just those for the
standard lie algebra generators?
Sorry, but could you clarify what you mean? For instance, what I'm saying
I'm unfortunately ignorant of the commutation relations of su(2) and su(3)
but I am generally interested in the clear expression of mathematics in
code. Are you able to either point to simple and quick-to-read reference
or give a clear example of the problem and the importance (I prefer the
Thanks, David! I was scanning that document earlier, but I missed that
part. That should definitely help.
On Wednesday, 19 June 2013 21:14:03 UTC+1, David Joyner wrote:
On Wed, Jun 19, 2013 at 3:53 PM, Mary Clark
mary.sp...@gmail.comjavascript:
wrote:
Just a question on
How we add appropriate assumptions to the
parameter (integer or whatever)?
I am not sure what you mean here.
I guess that the solution is valid only for an integer t (if we are
talking about a Diophantine equation). This information should be
provided, through the new assumption module I
user can't know of the assumptions on the parameter. Besides being
integers I didn't found any special assumption on them still.
This is the job of the docstring. Also, since subs doesn't check that the
new value matches the old assumption I don't think you have to bother with
returning
Rather than use Parameters, I suggested that we just use a uniquely named
symbol. The problem with Dummy is that you can still get a visual clash on
symbols: Symbol(_t) looks like Dummy(t). This (or the perhaps ugly
unique name), of course, could be replaced with user variables.
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Hi,
I(with the help of Chris) have recently merged in two functions that
convert Dictionary of Keys(DOK) representation to Compressed Row
Format(CSR) format and vice versa. [1].
Since I don't actually know much about the applications of sparse
matrices in domains like Computer Science, Physics,
There's no need to use a name convention. I'm sure Thilina didn't know
about Dummy.
Aaron Meurer
On Wed, Jun 19, 2013 at 7:25 PM, Chris Smith smi...@gmail.com wrote:
Rather than use Parameters, I suggested that we just use a uniquely named
symbol. The problem with Dummy is that you can still
The foreword and preface of Bronstein's book detail some of the
history of symbolic integration, which historically was one of the
primary motivations for computer algebra.
Aaron Meurer
On Wed, Jun 19, 2013 at 12:07 PM, David Joyner wdjoy...@gmail.com wrote:
On Wed, Jun 19, 2013 at 12:41 PM,
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