Updates:
Blockedon: -sympy:2196 sympy:2196
Comment #2 on issue 2877 by ness...@googlemail.com: Contradictory facts
about infinities in the new assumptions
http://code.google.com/p/sympy/issues/detail?id=2877
The old system is susceptible to similar problems. For example, just add
Issue 2196: Document assumptions
http://code.google.com/p/sympy/issues/detail?id=2196
This issue is now blocking issue sympy:2877.
See http://code.google.com/p/sympy/issues/detail?id=2877
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New issue 3749 by asmeu...@gmail.com: Some doctests are using the unicode
printer
http://code.google.com/p/sympy/issues/detail?id=3749
See https://github.com/sympy/sympy/pull/1969#issuecomment-16326861. The
failures are due to the
Comment #2 on issue 3224 by gra...@gmail.com: Generating Functions for
sympy.stats
http://code.google.com/p/sympy/issues/detail?id=3224
@mrocklin : Now that we have functions to calculate moments after
https://github.com/sympy/sympy/pull/1875, do we need these functions ? If
yes I
Comment #3 on issue 3224 by mrock...@gmail.com: Generating Functions for
sympy.stats
http://code.google.com/p/sympy/issues/detail?id=3224
Do we need these? No.
Would they be useful? Maybe, I don't know enough about them.
Would they be nice to have in any event? Sure.
If you want to work
Comment #4 on issue 3623 by asmeu...@gmail.com: Doc build warning with
Sphinx 1.2
http://code.google.com/p/sympy/issues/detail?id=3623
This is still relevant: https://github.com/sympy/sympy/pull/2003.
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Comment #5 on issue 3623 by asmeu...@gmail.com: Doc build warning with
Sphinx 1.2
http://code.google.com/p/sympy/issues/detail?id=3623
So what we need to do is request for a better way to do this upstream.
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New issue 3750 by asmeu...@gmail.com: Get rid of some unnecessary commented
out code with eradicate
http://code.google.com/p/sympy/issues/detail?id=3750
A lot of commented out code is unnecessary, because it is still in
Comment #6 on issue 3623 by asmeu...@gmail.com: Doc build warning with
Sphinx 1.2
http://code.google.com/p/sympy/issues/detail?id=3623
I worked around it by using Sphinx 1.1.3. Once we get this fixed, we should
update .travis.yml (assuming that pull request is merged by then).
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Hi,
I spent the last two days studying in a bit more detail the new
assumptions system. Are we *sure* that it can replace the old one?
I'm asking in particular because the new system does not do any
automated backwards chaining. The new system basically works like this.
To compute
Hello Aaron,
Sure, I shall read the first few chapters of the book as suggested. Also,
kindly, ignore my earlier pull request. I have submitted a new pull
request[1] for the divmod() function enhancement (issue no. 3202 in the
#EasyToFix issues list).
Kindly, let me know how it works.
[1]* *-
Hello,
After discussing here about Group Theory project, I worked on my
Group Theory project and have made my tentative proposal for GSoC 2013
Group Theory project and added to the wiki. It would be nice, if someone
review it and guide me about my proposal and the project.
My proposal is
Calculating Gradient
A grad() function will be present in the namespace of Vector module.
Make sure this generalizes to the Jacobian Matrix for functions R^n - R^M.
And do not forget about Hessians too.
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For possible reviewers I would mention that geometric algebra is just
the Clifford algebra of a real finite dimensional vector space with the
addition of a calculus.
On 04/12/2013 07:51 PM, Aaron Meurer wrote:
I suppose it would be nice if someone actually reviewed the code, to
see if it
Hi all,
I recently had a need for Jacobi polynomials with the property that
int(P(i, a, b, x)*P(j, a, b, x)*(1-x)^a*(1+b)^b, (x, -1, 1) = delta_ij
as I could not find these in SymPy I've come up with the following:
def norm_jacobi(n, a, b, x):
G, F = sy.gamma, sy.factorial
N2 =
Hello,
currently the printing.preview function needs an LaTeX installation to
compile
the expression to an image/document. Given that a LaTeX installation is not
always available, and matplotlib has already implemented a sizeable subset
of
the most common LaTeX math commands, would it be
On Sat, Apr 13, 2013 at 5:36 AM, Tarang Patel tarangro...@gmail.com wrote:
Hello,
After discussing here about Group Theory project, I worked on my
Group Theory project and have made my tentative proposal for GSoC 2013
Group Theory project and added to the wiki. It would be nice, if
This came up in matrix expressions
https://groups.google.com/forum/?fromgroups=#!searchin/sympy/triangular$20/sympy/sOeIU6nz-gM/DoVGj1Ka_WMJ
My answer to this is that we might want to change how new assumptions works
but that this is ok. New assumptions can be broken up as follows
1. A nice way
I recently had a need for Jacobi polynomials with the property that
int(P(i, a, b, x)*P(j, a, b, x)*(1-x)^a*(1+b)^b, (x, -1, 1) =
delta_ij
with the key element being the normalization factor. Would it be
possible to get this upstream (it is a pain to code up!), for example
as a
Would it be possible to get this upstream:
See PR 2009:
https://github.com/sympy/sympy/pull/2009
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Hi,
isn't this just a hypergeometric function?
E.g.
def jacobi(n, alpha, beta, z):
return rf(alpha, n)/factorial(n) * hyper([-n, 1 + alpha + beta +
n], [1 + alpha], (1-z)/2)
In [4]: jacobi(5, alpha, beta, z)
Out[4]:
┌─ ⎛-5, α + β + 6 │ z 1⎞
α⋅(α +
Ok, thanks for the reply. I think it should be possible to make the new
system work without backwards chaining. So I won't focus on that for now.
On 13.04.2013 14:21, Matthew Rocklin wrote:
This came up in matrix expressions
isn't this just a hypergeometric function?
Sure.
But the additional value is that we can compute
with symbolical instances of Jacobi polynomials
having indeterminate parameters.
We already have Jacobi polynomials as jacobi.
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Yeah I just realised that.
On 13.04.2013 15:12, someone wrote:
isn't this just a hypergeometric function?
Sure.
But the additional value is that we can compute
with symbolical instances of Jacobi polynomials
having indeterminate parameters.
We already have Jacobi polynomials as jacobi.
Coming to the first point of quantum related group theory ... I was lucky
that I went through the thread and found the paper
https://groups.google.com/group/sympy/browse_thread/thread/36c44041ff0ef792
A very quick scan gave me some implementation can be done with the
matrices.(Not completely
(h) Coefficients of terms in the expansion of Spherical Waves.Sorry for the
typo.
On Sat, Apr 13, 2013 at 8:17 PM, Amit Jamadagni bitsjamada...@gmail.comwrote:
Coming to the first point of quantum related group theory ... I was lucky
that I went through the thread and found the paper
On Sat, Apr 13, 2013 at 6:46 PM, David Joyner wdjoy...@gmail.com wrote:
On Sat, Apr 13, 2013 at 5:36 AM, Tarang Patel tarangro...@gmail.comwrote:
Hello,
After discussing here about Group Theory project, I worked on my
Group Theory project and have made my tentative proposal for GSoC
Calculating Gradient
A grad() function will be present in the namespace of Vector module.
Make sure this generalizes to the Jacobian Matrix for functions R^n - R^M.
More like a Jacobian operator. I believe the module is about vectors
as geometrical entities, not matrices.
And do not
On Apr 13, 2013, at 2:57 AM, Tom Bachmann e_mc...@web.de wrote:
Hi,
I spent the last two days studying in a bit more detail the new assumptions
system. Are we *sure* that it can replace the old one?
I'm asking in particular because the new system does not do any automated
backwards chaining.
Hello,
I'm second year postgraduate student in Saint-Petersburg Nuclear
Physics Institute by specialty Theoretical Physics.
I want to develop the idea of Risch algorithm for symbolic
integration as a part of my GSoC 2013 project.
I also trying to finish the
The code is all in sympy/integrals/, in the risch.py, rde.py, and prde.py files.
Aaron Meurer
On Sat, Apr 13, 2013 at 1:58 PM, Iurii Demidov iurii.demi...@gmail.com wrote:
Hello,
I'm second year postgraduate student in Saint-Petersburg Nuclear
Physics Institute by specialty
While I was going through quantum algebra I found q calculus and a quick
search on the documentation gave me q related functions. Is there a
complete implementation of q calculus.Reference( Klimyk A., Schmudgen K.
Quantum groups and their representations (Springer, 1997)).And I request
someone
Hi,
I have spent the last couple of days writing up a more coherent
proposal. It is now in a readable state, see [1]. Any comments would be
appreciated. (The proposal is still slightly rough, in particular there
are a few TODO notes, and I haven't written anything yet about stretch
goals.)
This looks very good so far. I have just some comments, which perhaps
should be forked into another one of your mini-threads
- If you are planning on making any changes to the cache, you might
want to take a look at bin/test -C and see what sorts of issues
currently exist with it. There is also
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