Updates:
Status: Valid
Comment by asmeu...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 93: Square root denesting
http://code.google.com/p/sympy/issues/detail?id=93
issue 274: evaluate keyword from old core
Updates:
Status: Valid
Comment by asmeu...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 13: Asymptotic expansion
http://code.google.com/p/sympy/issues/detail?id=13
issue 60: ironpython porting
http://code.google.com/p/sympy/issues/detail?id=60
Updates:
Status: Valid
Comment by asmeu...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 2057: Units do not work together with evalf?
http://code.google.com/p/sympy/issues/detail?id=2057
issue 2058: atoms doesn't work correctly with Indexed
Updates:
Status: Valid
Comment by asmeu...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 42: assumptions for bounded (over different domains)
http://code.google.com/p/sympy/issues/detail?id=42
issue 101: tests on the wiki documentation
Updates:
Status: Valid
Comment by asmeu...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 1997: Bug in dsolve() undetermined coefficients solver
http://code.google.com/p/sympy/issues/detail?id=1997
issue 2002: has() doesn't like sqrt
Updates:
Status: Valid
Comment by asmeu...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 2557: inline Piecewise C code constructs not actually valid C
http://code.google.com/p/sympy/issues/detail?id=2557
issue 2559: lack definite integral of
Updates:
Status: Valid
Comment by asmeu...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 2843: nsimplify of longs fails
http://code.google.com/p/sympy/issues/detail?id=2843
issue 2844: integration of 1/sqrt(n-m*x^2)
Updates:
Status: Valid
Comment by asmeu...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 49: pylint score
http://code.google.com/p/sympy/issues/detail?id=49
issue 182: Plot linear maps
http://code.google.com/p/sympy/issues/detail?id=182
Comment #18 on issue 309 by brian.jo...@gmail.com: plotting on macos x
freezes
http://code.google.com/p/sympy/issues/detail?id=309
This bug is extremely old. My opinion is that a new approach should be
taken to replace the functionality rather than patch it. Not because it's
old, but
Updates:
Cc: smi...@gmail.com
Comment #20 on issue 2476 by sapta.ii...@gmail.com: nth order Derivative
http://code.google.com/p/sympy/issues/detail?id=2476
This was fixed by Chris a while back. It should be closed.
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Updates:
Owner: asmeu...@gmail.com
Comment #15 on issue 850 by sapta.ii...@gmail.com: x**2 == abs(x)**2
returns False
http://code.google.com/p/sympy/issues/detail?id=850
Please close this.
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Updates:
Status: Fixed
Comment #16 on issue 2696 by julien.r...@gmail.com: Assumptions fail for
non-commutative symbols
http://code.google.com/p/sympy/issues/detail?id=2696
The pull request has been committed but the issue tracker wasn't updated:
commit
Updates:
Status: Fixed
Labels: -NeedsReview
Comment #5 on issue 3159 by mrock...@gmail.com: Intersection class for sets
http://code.google.com/p/sympy/issues/detail?id=3159
This is in.
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Issue 2713: meijerint should use partial fractions
http://code.google.com/p/sympy/issues/detail?id=2713
This issue is now blocking issue 3056.
See http://code.google.com/p/sympy/issues/detail?id=3056
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Comment #3 on issue 3153 by ness...@gmail.com: Expansion of 2F1 hyper((1/3,
1/3), (4/3,), a*exp_polar(I*pi)/(b*x)) fails
http://code.google.com/p/sympy/issues/detail?id=3153
Are you sure the second example has a closed form?
Comment #3 on issue 3169 by sean.v@gmail.com: qapply fully expands
arguments
http://code.google.com/p/sympy/issues/detail?id=3169
So when I first saw this, I was only thinking of the relatively simple case
Matthew noted above, where you end up with some scalars multiplying a
state,
Comment #3 on issue 3054 by ness...@gmail.com: Simplification of ratios of
gamma functions
http://code.google.com/p/sympy/issues/detail?id=3054
As of a recent commit, expand_func does this in certain cases:
In [2]: gamma(S(1)/4)/gamma(S(5)/4)
Out[2]:
Γ(1/4)
──
Γ(5/4)
In [3]:
Updates:
Status: Started
Comment #4 on issue 3153 by ness...@gmail.com: Expansion of 2F1 hyper((1/3,
1/3), (4/3,), a*exp_polar(I*pi)/(b*x)) fails
http://code.google.com/p/sympy/issues/detail?id=3153
PR for first example: https://github.com/sympy/sympy/pull/1149
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Labels: Type-Defect Priority-Medium
New issue 3171 by waks...@gwax.com: direction doesn't affect some limits
http://code.google.com/p/sympy/issues/detail?id=3171
limit(1/(x-2),x,2) does not seem to respond to the dir parameter correctly
whereas limit(1/x,x,0) seems to
Comment #4 on issue 3057 by ness...@gmail.com: Closed form results for
meijerg functions
http://code.google.com/p/sympy/issues/detail?id=3057
The first of these works for me (now?).
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Updates:
Status: Fixed
Comment by ronan.l...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 149: Units and dimensions
http://code.google.com/p/sympy/issues/detail?id=149
issue 159: bug in the series
Comment #5 on issue 3057 by someb...@bluewin.ch: Closed form results for
meijerg functions
http://code.google.com/p/sympy/issues/detail?id=3057
Really? On master? Just tried it again and it does not for me.
Did you make assumtions on a, t or w?
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Comment #5 on issue 3153 by someb...@bluewin.ch: Expansion of 2F1
hyper((1/3, 1/3), (4/3,), a*exp_polar(I*pi)/(b*x)) fails
http://code.google.com/p/sympy/issues/detail?id=3153
The integral 1/(x*(a+b*x)**Rational(1,3)) has a very ugly but closed form.
Please see Algebraic Function Integration
Comment #6 on issue 3057 by ness...@gmail.com: Closed form results for
meijerg functions
http://code.google.com/p/sympy/issues/detail?id=3057
You are right I had assumed a to be positive.
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Comment #6 on issue 3153 by someb...@bluewin.ch: Expansion of 2F1
hyper((1/3, 1/3), (4/3,), a*exp_polar(I*pi)/(b*x)) fails
http://code.google.com/p/sympy/issues/detail?id=3153
Oh, no you asked about the second one. The its Algebraic Function
Integration Problem 14 in the same document.
I
Comment #4 on issue 3056 by someb...@bluewin.ch: Closed-form results of
sums of meijerg functions
http://code.google.com/p/sympy/issues/detail?id=3056
Right, the first now gives 1/(a**2 + 4*pi**2*w**2) w/o any assumtions on
the variables.
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Comment #7 on issue 3153 by ness...@gmail.com: Expansion of 2F1 hyper((1/3,
1/3), (4/3,), a*exp_polar(I*pi)/(b*x)) fails
http://code.google.com/p/sympy/issues/detail?id=3153
The one I was referring to is actually problem 14. I'll try to see what we
can do.
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Comment #2 on issue 3157 by someb...@bluewin.ch: limit() of hypergeometric
function does not work
http://code.google.com/p/sympy/issues/detail?id=3157
See also #2953 which shows the same issue for MeijerG functions.
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Comment #7 on issue 3057 by someb...@bluewin.ch: Closed form results for
meijerg functions
http://code.google.com/p/sympy/issues/detail?id=3057
But you are right too. Just looked it up in the tables and there it
says a0.
Maybe there is no simple solution otherwise. But note that even with
Comment #22 on issue 2476 by renato.c...@gmail.com: nth order Derivative
http://code.google.com/p/sympy/issues/detail?id=2476
Sorry, did I miss something? I don't see how to do d^n f(x)/dx^n (with n
symbolic) in current master (diff() doc has't changed), nor can I find any
commit related to
Updates:
Status: Fixed
Comment #8 on issue 3109 by smi...@gmail.com: sqrt(exp(4*a)) != exp(2*a)
http://code.google.com/p/sympy/issues/detail?id=3109
(No comment was entered for this change.)
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Comment #6 on issue 2418 by grd...@gmail.com: Interval.evalf() returns a
mpmath interval
http://code.google.com/p/sympy/issues/detail?id=2418
I am trying to fix this issue, and wanted some more input:
1. I have removed the interval_evalf() functions from inequalities.py and
all tests for
Comment #8 on issue 3153 by ness...@gmail.com: Expansion of 2F1 hyper((1/3,
1/3), (4/3,), a*exp_polar(I*pi)/(b*x)) fails
http://code.google.com/p/sympy/issues/detail?id=3153
The fix for the first example is in.
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Comment #2 on issue 2962 by amake...@college.harvard.edu: Dihedral group
generator wrong for n=1, 2
http://code.google.com/p/sympy/issues/detail?id=2962
A fix of this was merged today and the problem should be gone in the
current version of sympy.
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Comment #3 on issue 2962 by asmeu...@gmail.com: Dihedral group generator
wrong for n=1, 2
http://code.google.com/p/sympy/issues/detail?id=2962
Which pull request was it?
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Updates:
Status: Valid
Comment by asmeu...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 345: implement _sage_ methods
http://code.google.com/p/sympy/issues/detail?id=345
issue 823: laplace, div, grad
Updates:
Status: Valid
Comment by asmeu...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 2057: Units do not work together with evalf?
http://code.google.com/p/sympy/issues/detail?id=2057
issue 2101: latex printing with piecewise function : reversed
Updates:
Status: Valid
Comment by asmeu...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 101: tests on the wiki documentation
http://code.google.com/p/sympy/issues/detail?id=101
issue 1099: collect sometimes doesn't collect inside brackets
Updates:
Status: Valid
Comment by asmeu...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 2009: Document why solve((x-y,y),x) is None
http://code.google.com/p/sympy/issues/detail?id=2009
issue 2051: [PATCH] latex: \operatorname{\mathcal{}} is not
Updates:
Status: Valid
Comment by asmeu...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 2673: Improve the use2to3 script to use git ls-files
http://code.google.com/p/sympy/issues/detail?id=2673
issue 2707: exctract_multiplicatively problem with
Updates:
Status: Valid
Comment by asmeu...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 2843: nsimplify of longs fails
http://code.google.com/p/sympy/issues/detail?id=2843
issue 2849: integration of cos(x)/sin(x)**n
Updates:
Status: Fixed
Comment by ronan.l...@gmail.com:
(No comment was entered for this change.)
Affected issues:
issue 589: ./setup.py test stopped executing doctests...
http://code.google.com/p/sympy/issues/detail?id=589
issue 667: refactor sympify?
Maybe there is some gain in using Strassen multiplication on Z or Q in gmpy
mode.
Attached is an implementation; for matrices with entries randint(0,N)
and size n, I find that for N=10, 10**3, 10**6 the speedup increases with N;
the break even point is n=190; for n=448
the speedup with Strassen
This seems doable and our cse algorithms are somewhat bad.
Hosengadi et al 2006:
http://cseweb.ucsd.edu/~kastner/papers/tcad06-poly_factorization_cse.pdf
-- Andy
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Hello,
Since the thread is about fundamental algebraic structures, I'd like
to voice in. While group theoretical stuff is mainly discussed in
this thread, I'd like to point out that it would be nice (at least in
my opinion) to start the implementation from the fundamental
components of algebraic
Probably not, although I have worked with ncurses before so I can
answer a few questions.
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Hello,
On Tue, Mar 20, 2012 at 7:48 AM, Rishav Das rishavd...@gmail.com wrote:
I wish to work on a mobile application for SimPy for this upcoming
GSoC.
I have some prior experience in developing for android platform and
will be able to create a UI that would integrate well and work
On Tue, Mar 20, 2012 at 7:56 AM, Bharath M R catchmrbhar...@gmail.com wrote:
Text plotting is implemented to a certain extent in sympy.I missed that
before
And it looks very nice. What are the improvements that can be done?
While I am far from being critical or claiming any authority in the
Maybe some cave dwellers who use dot-matrix printers find ascii plots
useful? I too am curious about the usefulness of ASCII plots.
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We have code printer's it would be nice to take a function and turn it
into a symbolic expression. This would allow for symbolically
exploring optimizations. Lots of publishing on this, I can find a
reference or two (John Gunnels thesis is certainly a good read).
AFAIK this is how John optimizes
On Tuesday, March 20, 2012 8:08:00 PM UTC+5:30, scolobb wrote:
On Tue, Mar 20, 2012 at 7:56 AM, Bharath M R catchmrbhar...@gmail.com
wrote:
Text plotting is implemented to a certain extent in sympy.I missed that
before
And it looks very nice. What are the improvements that can be
I was looking through the matplotlib backend by Krastanov. I saw that
to fix maybe all the problem we have to rewrite experimental_lambdify.
Q: Is there same way to fix all possible problems?
A: Probably by constructing our strings ourself by traversing the (func,
args) tree and creating the
I'm confused.
Are you talking about turning a python function into a sympy expression,
optimizing the sympy expression and then going back?
What's an example use case?
-Matt
On Tue, Mar 20, 2012 at 7:52 AM, Andy Ray Terrel andy.ter...@gmail.comwrote:
We have code printer's it would be nice
I am a second year undergraduate student of Indian Institute of techonlogy,
Delhi (IIT-D) pursuing integrated mathematics and computing.
I am interested in *D**efinite integration integration on complex plane
using residues * .
I am at present doing a course in complex analysis and very well
On Mon, Mar 19, 2012 at 10:28 PM, Bharath M R catchmrbhar...@gmail.com wrote:
Hi,
I had previously expressed my desire to work on gamma.sympy.org parser.
After the
discussion in the group I realized I don't have the required expertise to
write the parser which would
satisfy the
Sure, go ahead and add it to the ideas list.
Aaron Meurer
On Tue, Mar 20, 2012 at 8:19 AM, Andy R. Terrel andy.ter...@gmail.com wrote:
This seems doable and our cse algorithms are somewhat bad.
Hosengadi et al
2006: http://cseweb.ucsd.edu/~kastner/papers/tcad06-poly_factorization_cse.pdf
On Tue, Mar 20, 2012 at 10:24 AM, Sergiu Ivanov
unlimitedscol...@gmail.com wrote:
Hello,
Since the thread is about fundamental algebraic structures, I'd like
to voice in. While group theoretical stuff is mainly discussed in
this thread, I'd like to point out that it would be nice (at least
Isn't this just a matter of turning some variables into Symbols and
wrapping your literals in sympify() calls, so that everything comes
out symbolically?
Aaron Meurer
On Tue, Mar 20, 2012 at 9:44 AM, Matthew Rocklin mrock...@gmail.com wrote:
I'm confused.
Are you talking about turning a
This lets you include IPython style prompts in the Sphinx docs. As
far as I can tell, it doesn't let you do anything with respect to the
notebook.
Aaron Meurer
On Mon, Mar 19, 2012 at 10:38 PM, Bharath M R catchmrbhar...@gmail.com wrote:
I think the ipython directive
I think it would be best if sympify() were to remain a strict Python
to SymPy parser. In this respect, there are very few things that it
cannot do yet (the two that I can think of are
http://code.google.com/p/sympy/issues/detail?id=2663 and
http://code.google.com/p/sympy/issues/detail?id=3051).
On Mar 20, 12:32 am, Saptarshi Mandal sapta.iit...@gmail.com wrote:
The notes for a graduate course at Colorado State are also very
interesting. I referred to them for implementing some of the more
elementary algorithms.
http://www.math.colostate.edu/~hulpke/CGT/CGT.html
Thanks for the
Hi,
I have worked out a possible implementation for the framework. Here's the
basic design:
I'm dividing the complete framework into 2 parts:
1. The main algorithm to work out step-wise expression manipulation
2. The User Interface
Here's a short description of how I plan to implement
On Tue, Mar 20, 2012 at 12:59 PM, Aleksandar Makelov
amake...@college.harvard.edu wrote:
On Mar 20, 12:32 am, Saptarshi Mandal sapta.iit...@gmail.com wrote:
The notes for a graduate course at Colorado State are also very
interesting. I referred to them for implementing some of the more
Hello,
On Tue, Mar 20, 2012 at 7:16 PM, Ashwini Oruganti
ashwini.oruga...@gmail.com wrote:
The design can work in the following manner:
Once an operation is performed, the UI asks the user if he wants the
step-wise solution to be printed. If yes, go to Step 2, else exit the UI.
Determine
On Wed, Mar 21, 2012 at 12:10 AM, Sergiu Ivanov
unlimitedscol...@gmail.comwrote:
Hello,
On Tue, Mar 20, 2012 at 7:16 PM, Ashwini Oruganti
ashwini.oruga...@gmail.com wrote:
The design can work in the following manner:
Once an operation is performed, the UI asks the user if he wants the
On Tue, Mar 20, 2012 at 8:53 PM, Ashwini Oruganti
ashwini.oruga...@gmail.com wrote:
On Wed, Mar 21, 2012 at 12:10 AM, Sergiu Ivanov unlimitedscol...@gmail.com
wrote:
You may wish to consider going a step backwards, so that the user can
explore different possibilities of transforming an
The idea is interesting. You would have to consider side-effects and
other similar complications that make optimization hard for the C
compiler in the first place. For example, '*x += *y; *x += *y;' is
different from '*x += 2 * (*y)' if x and y point to the same thing.
On 03/20/2012 01:55 PM,
On Mar 20, 1:36 pm, David Joyner wdjoy...@gmail.com wrote:
This seems good. It sounds like you plan on implementing
permutation groups, and the methods you describe, which the
user defines using a list of (permutation) generators.
Is that your question?
Well I was thinking about a more
Yeah the idea for a first pass is to only support Static Single
Assignment codes and then iterate upon that.
-- Andy
On Tue, Mar 20, 2012 at 2:47 PM, Nikhilesh Sigatapu
s.nikhil...@gmail.com wrote:
The idea is interesting. You would have to consider side-effects and other
similar complications
FWIW, DirectMath is a nice front-end to Maxima and Mathematica (though I've
not used it for that) and it has an equation editor. It might be worth
looking at to get some ideas. I also like the integrated ability to draw
items in your document.
http://www.directmath.com/
/c
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Hello world,
I am a graduate student studying dynamics at UC Davis. We have been using
a dynamics package for one of my classes that was written by some current
graduate students in my research group. They have previous experience with
GSoC developing this dynamics package. The package is
Hey all - My name is Sam and I'm a first year student studying
Electronics and Computer Science, my main interests at the moment are
cryptography and computational Mathematics.
The project I'm interested in is creating an Android and/or IOS app
for SymPy, I've done some minor android dev in the
I've created wiki page with appropriate details:
https://github.com/sympy/sympy/wiki/GSoC-2012-Application--Rishav-Binayak-Das--Mobile-Application-for-SymPy
And I'll now proceed to work on the patch!
On Mar 20, 10:30 am, Sergiu Ivanov unlimitedscol...@gmail.com wrote:
Hello,
On Tue, Mar 20,
On Tue, Mar 20, 2012 at 4:32 PM, Sam Brown samdanielbr...@gmail.com wrote:
Hey all - My name is Sam and I'm a first year student studying
Electronics and Computer Science, my main interests at the moment are
cryptography and computational Mathematics.
The project I'm interested in is creating
Have you played around with GAP or the Mathematica group functions? I know
GAP allows you to create abstract (non-permutation) groups. It would be a
good place to look for ideas.
Like I said earlier I was considering doing this as a GSoC project myself
if I had time. I'm still interested in
Another thing to think about: how do we simplify expressions to make them
optimal for code? This is not necessarily the same as making them look
simple, which is what we currently tend to aim for in simplification
functions There's also the question of putting expressions in a form that
is
Hi all, my name's Anthony Burzillo and I am currently a freshman at Johns
Hopkins studying Physics and CS.
I am particularly interested in SymPy since, as a Physics/Math major, I
often find myself checking my processes with Mathematica, and therefore see
the value in an open source project
Sounds good. I am just not sure if *implementing* a pure abstract
group class is the best way to go. From an implementation perspective,
it would be very convenient if the abstract group class encapsulates
the permutation group class. Implementing any other concrete group
will then require one to
I went with svgfig because the plots in svgfig look more
of publication quality than google chart API. Google chart API
is better for plotting statistics rather than functions/expressions.
I can also add a backend for google chart api.
The major part of writing the backend would be integrating
I wonder how often we have a CAS on a mobile device :)
Anyway, I am curious to know what the energy footprint of the core
sympy algorithms will be. It may be the case that in order to conserve
battery life, we might need to change how certain algorithms are
implemented, leave some sub-expressions
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