Comment #4 on issue 4030 by avichal@gmail.com: Sympy hangs on fairly
simple expression
http://code.google.com/p/sympy/issues/detail?id=4030
I tried a simpler example such as series(x**y, x) and that also gives
O(log(x)**6)
In exponential.py a condition checks if arg0 belongs in [-oo,
@Aaron Thank you for your reply.So,can I start working on my proposal?
On Wednesday, January 29, 2014 7:12:02 AM UTC+5:30, Aaron Meurer wrote:
I don't think there is any active work going on right now in the
geometry module. If there is, there will likely be an open pull
request for it.
Hello.
Akshay says :
My idea is to extend the current module which
has only ellipse class to add both Hyperbolae
and Parabolae classes to the Geometry module.
You could work on a class Conic. Using projective geometry, it's easy to
deal with all the different kinds of conics.
Christophe,
@Christophe
I thought of that but Ellipse and Circle have already been
implemented.Furthermore one class cannot generalise all these conic
sections as some have certain properties which are unique and cannot be
generalised to others.
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I am having the following little anoying issue:
Imagine i have:
from sympy import var
var('x y z t')
p=Poly(x*y + x*z + z*t,gens=[x,y])
now i can use p.coef_monomial to extract coefficients for x, y or x*y but
how do I get the constant part z*t?
Any straightforward way to do this?
Thanks!
--
That's right but it could be useful to have such a class fir more general
context.
Le 29 janv. 2014 10:05, Akshay akshaynukal...@gmail.com a écrit :
@Christophe
I thought of that but Ellipse and Circle have already been
implemented.Furthermore one class cannot generalise all these conic
Hi,
On 29 January 2014 10:08, Roderick de Nijs razor4...@gmail.com wrote:
I am having the following little anoying issue:
Imagine i have:
from sympy import var
var('x y z t')
p=Poly(x*y + x*z + z*t,gens=[x,y])
now i can use p.coef_monomial to extract coefficients for x, y or x*y but
how
Ok for some reason I did not get it to work before:
p.nth(0,0)
El miércoles, 29 de enero de 2014 10:08:34 UTC+1, Roderick de Nijs escribió:
I am having the following little anoying issue:
Imagine i have:
from sympy import var
var('x y z t')
p=Poly(x*y + x*z + z*t,gens=[x,y])
now
Ah great! Didn't think of that. Thanks!
Yeah, once my current pull request is done
(https://github.com/sympy/sympy/pull/2829)
I might try to find some time to dig around with the metaclasses (I'm not
the biggest fan
of metaclasses in general - I usually find them quite confusing in practice)
Hi,
How can we simplify the roots. Will the more advanced sqrtdenest
algorithms help
(https://code.google.com/p/sympy/issues/detail?id=93)?
I'm not sure if this is of any help here, but rechecking and
implementing the complete root denesting algorithm should be
a good thing in any case.
@Harsh, could you brief your work in this area (finding the points of
discontinuity and check whether a function is singular) so it will be clear
for me where to start?
On Wednesday, January 29, 2014 10:04:30 AM UTC+5:30, Harsh Gupta wrote:
My implementation works only with function defined
It seems somehow I had missed this conversation (on the issues page). It is
definitely true that this transformation adds many auxiliary variables (as
many as the number of non-atomic clauses). However what I am working on is
to optimize this encoding to such an extent that the encoding plus
You may want to have a look at the discussion here -
https://groups.google.com/forum/#!topic/sympy/wknFPGmTw0w and tell us what
your ideas are.
As is indicated in that thread, the logic module has a lot of scope for
improvement, so work can be done in that direction.
On Wednesday, January 29,
Thanks. Didnt know that 1 is always a generator :)
El miércoles, 29 de enero de 2014 10:22:54 UTC+1, Mateusz Paprocki escribió:
Hi,
On 29 January 2014 10:08, Roderick de Nijs razo...@gmail.comjavascript:
wrote:
I am having the following little anoying issue:
Imagine i have:
What is the further scope in developing a Group Theory module, especially
since a lot of it was covered in
thishttp://www.google-melange.com/gsoc/project/google/gsoc2012/amakelov/27001
project?
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In [5]: X = ContinuousRV(x, x, (0, 2))
In [6]: Y = tan(X)
In [7]: density(Y)
AttributeError: 'tuple' object has no attribute 'is_Piecewise'
Is this a bug or a missing feature?
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Hello,
I'll be applying for GSOC this year and while I was reading the ideas page
I was really interested in working on one of the three of your projects
mentioned below.
First one is improving the solve function:
It mentions of finding some way to be sure that the function has found all
the
Hi,
@Harsh, could you brief your work in this area (finding the points
H of
discontinuity and check whether a function is singular) so it will be
clear for me where to start?
In this context the following papers by Adam Strzeboński may be very relevant:
Real root isolation for
I found this paper Analytical optimization using computer algebraic
manipulation
http://dl.acm.org/citation.cfm?doid=355637.355641
Can you suggest some more resources?
On Wednesday, 29 January 2014 00:23:57 UTC+5:30, p0906uec wrote:
Hi,I am Pradyumna Paliwal.I have currently studying
Just a heads up: sympy gamma is on the front page if hacker news right now:
https://news.ycombinator.com/item?id=7145219
If some of the core devs are available to respond to some comments there, it
might be a visibility boost for the project and obviously for sympy by
association.
--
You
Hello,
I would like to discuss the implementation of Braid Groups. This
would involve the implementation of various invariants related to Braids
like the Alexander's polynomial
(http://mathworld.wolfram.com/AlexanderPolynomial.html) by building up the
Burau representation of the same
On Wed, Jan 29, 2014 at 4:32 PM, Amit bitsjamada...@gmail.com wrote:
Hello,
I would like to discuss the implementation of Braid Groups. This
Are you planning on going beyond what is already known?
http://www.math.uiuc.edu/~nmd/snappea/
If so, what is your plan?
would involve the
On Wed, Jan 29, 2014 at 11:41 AM, Siddarth R sid.th2...@gmail.com wrote:
What is the further scope in developing a Group Theory module, especially
since a lot of it was covered in this project?
That was a great project:-)
Obviously, there is a lot more to group theory, but to answer your
Thanks for the heads up. We'll have to check the logs later to see if
it resulted in any noticeable spike.
Aaron Meurer
On Wed, Jan 29, 2014 at 3:19 PM, hacm...@gmail.com wrote:
Just a heads up: sympy gamma is on the front page if hacker news right now:
If the algorithm is actually complete, and works for higher order
roots (not just square roots), then I suppose it should work here.
Aaron Meurer
On Tue, Jan 28, 2014 at 3:47 PM, someone someb...@bluewin.ch wrote:
Hi,
How can we simplify the roots. Will the more advanced sqrtdenest
We were posted on
r/pythonhttp://www.reddit.com/r/Python/comments/1whmjy/sympy_gamma_an_opensource_pythonbased_alternative/as
well, and now we've reached our quota.
David
On Wednesday, January 29, 2014 6:05:01 PM UTC-7, Aaron Meurer wrote:
Thanks for the heads up. We'll have to check the
I didn't realize it wasn't on a paid plan. I'll talk to Ondřej.
Aaron Meurer
On Jan 29, 2014, at 9:06 PM, David Li li.david...@gmail.com wrote:
We were posted on
r/pythonhttp://www.reddit.com/r/Python/comments/1whmjy/sympy_gamma_an_opensource_pythonbased_alternative/as
well, and now we've
Oh apparently we *are* on a paid plan! but we hit the budget. Ondřej is
bumping it.
Aaron Meurer
On Wednesday, January 29, 2014, Aaron Meurer asmeu...@gmail.com wrote:
I didn't realize it wasn't on a paid plan. I'll talk to Ondřej.
Aaron Meurer
On Jan 29, 2014, at 9:06 PM, David Li
Its back online.
Aaron Meurer
On Wednesday, January 29, 2014, Aaron Meurer asmeu...@gmail.com wrote:
Oh apparently we *are* on a paid plan! but we hit the budget. Ondřej is
bumping it.
Aaron Meurer
On Wednesday, January 29, 2014, Aaron Meurer
asmeu...@gmail.comjavascript:_e({},
It is, but we hit the cap on daily cost.
David
On Jan 29, 2014 9:52 PM, Aaron Meurer asmeu...@gmail.com wrote:
I didn't realize it wasn't on a paid plan. I'll talk to Ondřej.
Aaron Meurer
On Jan 29, 2014, at 9:06 PM, David Li li.david...@gmail.com wrote:
We were posted on
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