Comment #3 on issue 2260 by smi...@gmail.com: 0**0 should be nan
http://code.google.com/p/sympy/issues/detail?id=2260
Well, like 1/0 being oo but (1/x).subs(x, 0) being nan, we can at least
disallow the substitution from producing 1. This has the side effect of
making Basic._compare_pretty
Updates:
Status: Fixed
Comment #3 on issue 28 by smi...@gmail.com: Polish series expansion.
http://code.google.com/p/sympy/issues/detail?id=28
(No comment was entered for this change.)
--
You received this message because you are subscribed to the Google Groups
sympy-issues group.
To
Updates:
Status: Fixed
Comment #5 on issue 1224 by smi...@gmail.com: some errors in limit function
http://code.google.com/p/sympy/issues/detail?id=1224
h[1] limit(x**(2/3)*sin(x**2)/(x-1), x, oo)
0
h[2] limit(sin(x), x, oo)
sin(oo)
h[3] limit(cos(x)/x,x,oo)
0
Comment #4 on issue 2260 by smi...@gmail.com: 0**0 should be nan
http://code.google.com/p/sympy/issues/detail?id=2260
see [ https://github.com/sympy/sympy/pull/193 ]
--
You received this message because you are subscribed to the Google Groups
sympy-issues group.
To post to this group, send
Comment #2 on issue 2204 by ness...@googlemail.com: Unpickling a Singleton
doesn't return the singleton object
http://code.google.com/p/sympy/issues/detail?id=2204
Pickling of new-style classes with __getnewarg__ only works in protocol 2
and higher.
aa = pickle.loads(pickle.dumps(S.Pi,
Comment #9 on issue 1304 by ksiondag...@gmail.com: Integrate sqrt(x**2 +
y**2) fails
http://code.google.com/p/sympy/issues/detail?id=1304
Is this fixed? Also, is this the same problem as (x**2 + y**2)**(1/2)
giving the wrong answer?
Because I'm getting this:
In [5]: integrate((x**2 +
Comment #5 on issue 2260 by asmeurer: 0**0 should be nan
http://code.google.com/p/sympy/issues/detail?id=2260
I am in favor of keeping it the same as Python.
Also, 1/S(0) should be returning zoo, not nan.
--
You received this message because you are subscribed to the Google Groups
Comment #10 on issue 1304 by asmeurer: Integrate sqrt(x**2 + y**2) fails
http://code.google.com/p/sympy/issues/detail?id=1304
That is not a bug. It is because Python is turning the 1/2 into 0, so you
are just integrating 0 with respect to x and y. See
Comment #6 on issue 2260 by smi...@gmail.com: 0**0 should be nan
http://code.google.com/p/sympy/issues/detail?id=2260
It returns oo, not nan. It's only the (1/x).subs(x, 0) that returns nan
since division by zero is undefined, right?
--
You received this message because you are subscribed
Updates:
Labels: NeedsReview
Comment #5 on issue 2179 by ronan.l...@gmail.com: Lambda refactoring
http://code.google.com/p/sympy/issues/detail?id=2179
https://github.com/sympy/sympy/pull/194
--
You received this message because you are subscribed to the Google Groups
sympy-issues
Updates:
Labels: Milestone-Release0.7.0
Comment #4 on issue 2178 by ronan.l...@gmail.com: A singleton object for
the identity function
http://code.google.com/p/sympy/issues/detail?id=2178
https://github.com/sympy/sympy/pull/194
--
You received this message because you are subscribed
Updates:
Labels: Ronan.Lamy
Comment #6 on issue 2179 by asmeurer: Lambda refactoring
http://code.google.com/p/sympy/issues/detail?id=2179
(No comment was entered for this change.)
--
You received this message because you are subscribed to the Google Groups
sympy-issues group.
To post
Updates:
Labels: NeedsReview Ronan.Lamy
Comment #5 on issue 2178 by asmeurer: A singleton object for the identity
function
http://code.google.com/p/sympy/issues/detail?id=2178
(No comment was entered for this change.)
--
You received this message because you are subscribed to the
Updates:
Status: NeedsDecision
Labels: NeedsReview
Comment #7 on issue 2205 by ronan.l...@gmail.com: Undefined functions
http://code.google.com/p/sympy/issues/detail?id=2205
https://github.com/sympy/sympy/pull/196
The test failures were due to a change in tsolve() that enabled
Comment #7 on issue 2068 by ksiondag...@gmail.com: integrate(Integral(f(x),
x), x) fails
http://code.google.com/p/sympy/issues/detail?id=2068
So, should the setup look something like this:
In [3]: integrate(Integral(f(x), x), x)
Out [3]: Integral(Integral(f(x), x), x)
?
Also, should
Comment #9 on issue 1304 by ksiondag...@gmail.com: Integrate sqrt(x**2 +
y**2) fails
http://code.google.com/p/sympy/issues/detail?id=1304
Is this fixed? Also, is this the same problem as (x**2 + y**2)**(1/2)
giving the wrong answer?
Because I'm getting this:
In [5]: integrate((x**2 +
Updates:
Labels: NeedsReview
Comment #5 on issue 2179 by ronan.l...@gmail.com: Lambda refactoring
http://code.google.com/p/sympy/issues/detail?id=2179
https://github.com/sympy/sympy/pull/194
--
You received this message because you are subscribed to the Google Groups
sympy-patches
Updates:
Labels: NeedsReview Ronan.Lamy
Comment #5 on issue 2178 by asmeurer: A singleton object for the identity
function
http://code.google.com/p/sympy/issues/detail?id=2178
(No comment was entered for this change.)
--
You received this message because you are subscribed to the
Updates:
Labels: Ronan.Lamy
Comment #6 on issue 2179 by asmeurer: Lambda refactoring
http://code.google.com/p/sympy/issues/detail?id=2179
(No comment was entered for this change.)
--
You received this message because you are subscribed to the Google Groups
sympy-patches group.
To post
Ben,
I think my main feedback is the same as Ondrej. How will you decide
what to cythonize? That is a non-trivial aspect of the work and I
think more thought needs to be given to that.
Cheers,
Brian
On Mon, Apr 4, 2011 at 5:43 AM, Ben M mcdonald@gmail.com wrote:
Hi,
I have updated my
Thanks for the feedback. I have mentioned how I will decide what to
cythonize but it is buried in the schedule. I will make that more
explicit.
I will also add cythonizing methods (headers, decorators, ...) and the
pros and cons.
Do I need to commit myself to a headers/decorators and a set of
Hi,
I have updated my proposal after making the changes suggested by Brian
and Andy. You may please have a look and inform me if anything else
needs to be corrected.
-Nakul
On Apr 3, 4:17 pm, nakul nakulthemas...@gmail.com wrote:
Hi Brian,
Thanks for the reply. I just need to do some
Hi all,
I would like to know what is the agreed upon way to treat spin 1/2 systems
in physics.quantum?
I would like to write a shorthand class for those states (a subclass of
J?Ket maybe), but:
- If it is just a subclass what stops me from writing my_spin_state.j =
something different than 1/2
Dear all,
I'm just bumping this up to let potential mentors and/or application
reviewers (except for Aaron and Ronan, thanks a lot again for your
input!) know that my application is at [1]. If there is anything
unclear to you, or if there is anything you would like me to add or
expand on, please
Hello,
I'm relatively new to SymPy. I'm using it to verify some of my
algebraic manipulations. I have the following expression I'm trying to
simplify:
1 3*Y
- +
3/2
Hello,
I've created a page on a wiki with my application for GSoC'2011:
https://github.com/sympy/sympy/wiki/GSoC-2011-Application-Pavel-Fedotov:-Multivariate-polynomials-and-factorization
I continue working with my proposal now.
So I open to your questions and ready to provide more information.
On 5 Apr., 02:32, Ronan Lamy ronan.l...@gmail.com wrote:
Le lundi 04 avril 2011 à 15:33 -0600, Aaron S. Meurer a écrit : Well, I am
convinced that large branches should be frozen anyway. The
larger branches have too high of a chance of rebases screwing up
commits so that they don't do
On 4 Apr., 22:26, Ondrej Certik ond...@certik.cz wrote:
The pull requests should be used only for code, that the author thinks
is *ready* to go in. So people will comment, and more work will be
needed. That is ok, it will take a day or two, to polish this up. If
it takes 3 weeks however, then
Hello,
Sorry for the long silence, I've been rather busy. I have prepared a
first darft of my application. Comments would be much appreciated!
https://github.com/sympy/sympy/wiki/GSoC-2011-Application-Jeremias-Yehdegho:-Implementing-F5
Kind regards,
Jeremias
--
You received this message
Hi everyone,
It's been a real pleasure getting to know the community here up to now, and
I'm very excited to say that I have now posted a draft application for my
proposed project, which will be to implement functionality for representing
position and momentum basis wavefunctions and operators in
On Apr 4, 2011, at 11:30 PM, Brian Granger wrote:
Hi,
Could you give an example of how you construct large sparse matrices.
What sort of constructors would you like to see in the class ?
Our big sparse matrices are formed out of tensor products of 2x2
matrices, such as Pauli and
On Apr 4, 2011, at 11:48 PM, Andy Ray Terrel wrote:
On Tue, Apr 5, 2011 at 12:23 AM, Brian Granger elliso...@gmail.com wrote:
On Sun, Apr 3, 2011 at 11:17 PM, Andy Ray Terrel andy.ter...@gmail.com
wrote:
On Mon, Apr 4, 2011 at 9:10 AM, Andy Ray Terrel andy.ter...@gmail.com
wrote:
On Mon,
On Tue, Apr 5, 2011 at 12:28 PM, Aaron S. Meurer asmeu...@gmail.com wrote:
On Apr 4, 2011, at 11:48 PM, Andy Ray Terrel wrote:
@Aaron: You are describing BLAS-like routines, LAPACK-like routines
often require sort's.
Sorry, I don't know what this means (as I said somewhere else, I have
Ben,
Thanks for the feedback. I have mentioned how I will decide what to
cythonize but it is buried in the schedule. I will make that more
explicit.
OK great.
I will also add cythonizing methods (headers, decorators, ...) and the
pros and cons.
Do I need to commit myself to a
Hi,
I would like to know what is the agreed upon way to treat spin 1/2 systems
in physics.quantum?
I would like to write a shorthand class for those states (a subclass of
J?Ket maybe), but:
- If it is just a subclass what stops me from writing my_spin_state.j =
something different than
If you have time, I would love to see this handle non-commutative
objects as well.
Cheers,
Brian
On Tue, Apr 5, 2011 at 6:53 AM, Effect fedot...@gmail.com wrote:
Hello,
I've created a page on a wiki with my application for GSoC'2011:
Jeremias,
Many of the reviewers of your proposal have no idea that F5 is (other
than a key at the top of my keyboard). Also, while some may know
about groebner stuff, others won't. To make your proposal accessible
to all reviewers I suggest:
* Describe what these things are in terms that your
Hi,
I have talked with Mateusz over a dinner last Sunday, and Aaron over
the phone, and also Ronan over the phone just now, and we discussed
what has to be done to merge this branch, and I think we are all on
the same page, and want to get this merged as soon as possible. Now
the only question is
Looks great!
Some comments:
* I would give some details about what the modules/classes will look
like in code for the position and momentum operators in Cartesian,
cylindrical, and spherical coordinates in 1D, 2D, and 3D.
* Don't forget to add details about the position and momentum
eigenstates
I am +1 on this plan.
Brian
On Tue, Apr 5, 2011 at 9:59 AM, Ondrej Certik ond...@certik.cz wrote:
Hi,
I have talked with Mateusz over a dinner last Sunday, and Aaron over
the phone, and also Ronan over the phone just now, and we discussed
what has to be done to merge this branch, and I
Hi Dave!
On Tue, Apr 5, 2011 at 5:36 AM, Dave dspg...@netscape.net wrote:
Hello,
I'm relatively new to SymPy. I'm using it to verify some of my
Welcome to SymPy!
algebraic manipulations. I have the following expression I'm trying to
simplify:
1 3*Y
-
Hi,
On 5 April 2011 19:23, Ondrej Certik ond...@certik.cz wrote:
Hi Dave!
On Tue, Apr 5, 2011 at 5:36 AM, Dave dspg...@netscape.net wrote:
Hello,
I'm relatively new to SymPy. I'm using it to verify some of my
Welcome to SymPy!
algebraic manipulations. I have the following expression
Hi,
I'm one of two Graduate Students at UC Davis who are putting together
a GSoC 2011 proposal for SymPy. We know that we might not both be
accepted, but we plan to work together on it in any case.
We want to continue work on PyDy, which was an earlier GSoC 2009
project started by one of our lab
Hello,
I did a Sympy GSoC project in 2009 on a package called PyDy [0].
PyDy depends intimately on SymPy, but currently the two projects are
maintained separately. The basic functionality of PyDy is to provide
a set of classes which ease kinematic and dynamic analysis of
mechanical systems that
Hi,
I am here...
I was looking on the ideas page of sympy for GSoC where the
generalization of the laplacian to graphs was presented, I have a
decent knowledge of graph theory and I am willing to learn new stuff
if needed =) although this specific task that I am interested was
vague in
Hi Luke,
On Tue, Apr 5, 2011 at 1:08 PM, Luke hazelnu...@gmail.com wrote:
Hello,
I did a Sympy GSoC project in 2009 on a package called PyDy [0].
PyDy depends intimately on SymPy, but currently the two projects are
maintained separately. The basic functionality of PyDy is to provide
a set
On Tue, Apr 5, 2011 at 8:37 AM, Vinzent Steinberg
vinzent.steinb...@googlemail.com wrote:
On 4 Apr., 22:26, Ondrej Certik ond...@certik.cz wrote:
The pull requests should be used only for code, that the author thinks
is *ready* to go in. So people will comment, and more work will be
needed.
On Tue, Apr 5, 2011 at 11:07 AM, Brian Granger elliso...@gmail.com wrote:
I am +1 on this plan.
Brian
On Tue, Apr 5, 2011 at 9:59 AM, Ondrej Certik ond...@certik.cz wrote:
Hi,
I have talked with Mateusz over a dinner last Sunday, and Aaron over
the phone, and also Ronan over the phone
I agree with Ondrej.
Since PyDy is (still at least) separate form SymPy, another idea
regarding GSoC would be to apply to work under the umbrella of Python.
See http://wiki.python.org/moin/SummerOfCode/2011. You have to fill
out an application to work under them this year. I would also look at
On Tue, Apr 5, 2011 at 4:51 AM, krastanov.ste...@gmail.com
krastanov.ste...@gmail.com wrote:
Hi all,
I would like to know what is the agreed upon way to treat spin 1/2 systems
in physics.quantum?
I would like to write a shorthand class for those states (a subclass of
J?Ket maybe), but:
-
On Tue, Apr 5, 2011 at 2:36 PM, Aaron Meurer asmeu...@gmail.com wrote:
On Tue, Apr 5, 2011 at 11:07 AM, Brian Granger elliso...@gmail.com wrote:
I am +1 on this plan.
Brian
On Tue, Apr 5, 2011 at 9:59 AM, Ondrej Certik ond...@certik.cz wrote:
Hi,
I have talked with Mateusz over a dinner
On Tue, Apr 5, 2011 at 4:16 PM, Aaron Meurer asmeu...@gmail.com wrote:
On Tue, Apr 5, 2011 at 4:51 AM, krastanov.ste...@gmail.com
krastanov.ste...@gmail.com wrote:
Hi all,
I would like to know what is the agreed upon way to treat spin 1/2 systems
in physics.quantum?
I would like to write a
On Tue, Apr 5, 2011 at 2:30 PM, Aaron Meurer asmeu...@gmail.com wrote:
On Tue, Apr 5, 2011 at 8:37 AM, Vinzent Steinberg
vinzent.steinb...@googlemail.com wrote:
On 4 Apr., 22:26, Ondrej Certik ond...@certik.cz wrote:
The pull requests should be used only for code, that the author thinks
is
Aaron,
Thanks for the suggestion about PSF. However, to me it seems
natural though to apply to Sympy rather than PSF because PyDy is
completely and wholly dependent on Sympy -- it can't work without it.
All development of it requires interfacing with and using Sympy's
functionality, not just
You should be aware that Google only allows one student per project (see
http://www.google-melange.com/document/show/gsoc_program/google/gsoc2011/faqs#group).
This means that if you both want to apply and be accepted, you need to apply
for separate projects. This is because there are separate
I meant you should apply under the umbrella of PSF for GSoC in addition to
SymPy (like you probably did back when you did GSoC, submitting identical
applications). This will increase your chances of being accepted, since the
competition for SymPy could be high. It was no statement on whether
SymPy is reluctant to do manipulations with the squareroots because they are
not valid for complex x and y (this is assumed by default). If you assume that
they are real, or even better, positive, it will work better (for example, you
can then split sqrt(x*y) = sqrt(x)*sqrt(y) or reduce
Hi,
I was looking on the ideas page of sympy for GSoC where the
generalization of the laplacian to graphs was presented, I have a
decent knowledge of graph theory and I am willing to learn new stuff
if needed =) although this specific task that I am interested was
vague in description and it
I'm the other grad student at UC Davis ... Just saying hi.
~Andrew Kickertz
--
You received this message because you are subscribed to the Google Groups
sympy group.
To post to this group, send email to sympy@googlegroups.com.
To unsubscribe from this group, send email to
Sorry for top posting, anyhow, thanks a lot for your reply, I see that
this project requires me to study the code and then integrate
sympy.physics.quantum and networkx. From a mathematical perspective, I
have to say that if this project is mostly quantum mehcanics then it
should be a lot of fun!!
Just a quick follow-up, you wouldn't happen to have any problem with
me being an incoming first-year undergrad, do you?? Thanks.
--
Regards,
Vikram Dhillon
~~~
To perceive is to suffer.
On Tue, Apr 5, 2011 at 8:47 PM, Vikram Dhillon dhillon...@gmail.com wrote:
Sorry for top posting, anyhow,
Dave wrote:
Hello,
I'm relatively new to SymPy. I'm using it to verify some of my
algebraic manipulations. I have the following expression I'm trying
to
simplify:
1 3*Y
- +
On Apr 5, 2011, at 10:54 AM, Brian Granger wrote:
On Tue, Apr 5, 2011 at 9:26 AM, Aaron S. Meurer asmeu...@gmail.com wrote:
On Apr 4, 2011, at 11:30 PM, Brian Granger wrote:
Hi,
Could you give an example of how you construct large sparse matrices.
What sort of constructors would you
On Apr 5, 2011, at 7:01 PM, Ronan Lamy wrote:
Le mardi 05 avril 2011 à 15:32 -0700, Ondrej Certik a écrit :
On Tue, Apr 5, 2011 at 2:36 PM, Aaron Meurer asmeu...@gmail.com wrote:
On Tue, Apr 5, 2011 at 11:07 AM, Brian Granger elliso...@gmail.com wrote:
I am +1 on this plan.
Brian
On
Sorry about the previous post, I was responding via email and the
messages which I though were being viewed together weren't...so I
didn't see your response describing what you wanted. Basically, what
you want is to simplify the insides of the radicals. With the right
assumptions (as Aaron talks
Hi,
I'm adding doctests to my new functions in my pull request (as
requested by Ondrej) and I noticed that sympy/physics/matrices.py
isn't being tested, which I kind of understand since there weren't any
tests in there before. How do I add the file to the list to be
doctested? The function is
Luke,
This is a fantastic idea! More comments inline.
I did a Sympy GSoC project in 2009 on a package called PyDy [0].
PyDy depends intimately on SymPy, but currently the two projects are
maintained separately. The basic functionality of PyDy is to provide
a set of classes which ease
Vikram.
Replies inline...
On Wed, Apr 6, 2011 at 12:28 AM, Brian Granger elliso...@gmail.com wrote:
Just a quick follow-up, you wouldn't happen to have any problem with
me being an incoming first-year undergrad, do you?? Thanks.
In theory I don't have any problem with this. But I would ask
68 matches
Mail list logo
