Comment #1 on issue 1327 by ondrej.certik: Derivative doesn't play well
with noncommutative symbols
http://code.google.com/p/sympy/issues/detail?id=1327
The attached patch fixes it. The only 2 tests that remain to fail are two
ODE tests.
Looking into it now.
Attachments:
Comment #1 on issue 1304 by akshaysrinivasan: Integrate sqrt(x**2 + y**2)
fails
http://code.google.com/p/sympy/issues/detail?id=1304
I traced this problem into heurisch(). Here's are the lines where it goes
wrong:
g=(x**2+y**2)**1/2
.
elif g.is_Pow: ##Line 186
if g.exp.is_Rational
Comment #4 on issue 1267 by akshaysrinivasan: improve our str printer:
1/cos(x)*sin(x) - sin(x)/cos(x)
http://code.google.com/p/sympy/issues/detail?id=1267
I apologise, I forgot about getting back.
Here's the patch for the test_str and test_ccode. All the tests passed on
my system.
Updates:
Owner: ondrej.certik
Labels: -EasyToFix Milestone-Release0.6.4
Comment #5 on issue 1267 by ondrej.certik: improve our str printer:
1/cos(x)*sin(x) - sin(x)/cos(x)
http://code.google.com/p/sympy/issues/detail?id=1267
Thanks, the patch looks good.
Comment #3 on issue 1304 by ondrej.certik: Integrate sqrt(x**2 + y**2) fails
http://code.google.com/p/sympy/issues/detail?id=1304
Great job Akshay!
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Updates:
Owner: ondrej.certik
Comment #3 on issue 1326 by ondrej.certik: 10**100 takes Python forever
to construct
http://code.google.com/p/sympy/issues/detail?id=1326
Fixed in my branch, will send for a review with other patches.
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Hi Akshay!
On Sat, Mar 14, 2009 at 11:22 PM, Akshay Srinivasan
akshaysriniva...@gmail.com wrote:
I got git to work, and am happy to send in my patch. This one solves
the above mentioned problems, and simplifies expressions recursively.
Note: boolalg/test.py is not a test! Its an example of
Ondrej Certik wrote:
On Mon, Mar 16, 2009 at 8:13 AM, Fabian Seoane fab...@fseoane.net wrote:
Function get_class returns a class from a given string. It makes use
of get_mod_func
---
sympy/utilities/source.py | 26 ++
1 files changed, 26 insertions(+), 0
Yes , I agree that it'd better to merge this into sympy.core.logic ,
but I'm concerned about the usability. I'm not sure by how much
facts.py would have to be changed, if this is done. I'll try merging
it, over the week.
Is it alright to break backward compatibility with sympy.core.logic? I
guess
On Mon, Mar 16, 2009 at 9:58 PM, Akshay Srinivasan
akshaysriniva...@gmail.com wrote:
Yes , I agree that it'd better to merge this into sympy.core.logic ,
but I'm concerned about the usability. I'm not sure by how much
facts.py would have to be changed, if this is done. I'll try merging
it,
Hi Aaron!
On Fri, Mar 13, 2009 at 8:03 PM, asmeurer asmeu...@gmail.com wrote:
Hello. My name is Aaron Meurer, and I would be interested in applying
to work with sympy under the Google Summer of Code 2009. I am
currently a student at New Mexico Tech and am doubling majoring in
Mathematics
Great! Is there anything that I should do before the 18th when the
mentoring organizations are accepted (assuming you get to reply by
then :) ). Google does not have the information on applying up yet,
so I am not exactly sure what I will need. From what I've read an
various websites linked to
On Mon, Mar 16, 2009 at 7:15 PM, asmeurer asmeu...@gmail.com wrote:
Great! Is there anything that I should do before the 18th when the
mentoring organizations are accepted (assuming you get to reply by
You can get involved more with the sympy project, more below.
then :) ). Google does
On Mon, Mar 16, 2009 at 21:43, Ondrej Certik ond...@certik.cz wrote:
As to the project, I suggest you pick some algorithm (that could be
used to solve lots of differential equations) that you could implement
and test. One example is variation of constants:
On Mar 16, 8:43 pm, Ondrej Certik ond...@certik.cz wrote:
On Mon, Mar 16, 2009 at 7:15 PM, asmeurer asmeu...@gmail.com wrote:
Great! Is there anything that I should do before the 18th when the
mentoring organizations are accepted (assuming you get to reply by
You can get involved more
On Mon, Mar 16, 2009 at 8:10 PM, asmeurer asmeu...@gmail.com wrote:
On Mar 16, 8:43 pm, Ondrej Certik ond...@certik.cz wrote:
On Mon, Mar 16, 2009 at 7:15 PM, asmeurer asmeu...@gmail.com wrote:
Great! Is there anything that I should do before the 18th when the
mentoring organizations
Laplace transforms are on your ideas list. Pardon me if I am slightly
ignorant, as we have just started learning about these, but part the
thing that makes Laplace transforms so great for solving ODEs is that
taking the Laplacian of a differential gives you back the initial
conditions of the
On Mon, Mar 16, 2009 at 9:14 PM, asmeurer asmeu...@gmail.com wrote:
Laplace transforms are on your ideas list. Pardon me if I am slightly
ignorant, as we have just started learning about these, but part the
thing that makes Laplace transforms so great for solving ODEs is that
taking the
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