Status: Accepted
Owner: Vinzent.Steinberg
Labels: Type-Defect Priority-Medium
New issue 1597 by Vinzent.Steinberg: turn expensive properties into methods
in sympy/geometry
http://code.google.com/p/sympy/issues/detail?id=1597
See issue 1507.
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Labels: NeedsReview
Comment #4 on issue 1507 by Vinzent.Steinberg: pickling test takes too much
time
http://code.google.com/p/sympy/issues/detail?id=1507
This patch looks fine, anyone against it? Should we rather turn the
properties into
methods?
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Comment #9 on issue 886 by Vinzent.Steinberg: simplify for general
functions and derivatives fails
http://code.google.com/p/sympy/issues/detail?id=886
A more explicit test case. (It does however need yet-to-be-implemented
assumptions
functionality and probably more explicit hints for simplif
Status: Started
Owner: mattpap
Labels: Type-Enhancement Priority-High NeedsReview Milestone-Release0.7.0
New issue 1598 by mattpap: New polynomials manipulation module
http://code.google.com/p/sympy/issues/detail?id=1598
So, after 5 weeks of coding new module is done. Well, almost done because
m
Comment #1 on issue 1598 by asmeurer: New polynomials manipulation module
http://code.google.com/p/sympy/issues/detail?id=1598
Wow! This is great. Simplification is much better with this. For
example, consider the complex expression
from issue 1562. In your branch:
>>> a = wronskian([sin(x
Comment #2 on issue 1598 by ondrej.certik: New polynomials manipulation
module
http://code.google.com/p/sympy/issues/detail?id=1598
Wow, Mateusz, you are a genius.
I tried this:
In [1]: a = (x+y+z)**20
In [2]: b = a.expand()
In [6]: time factor(b)
CPU times: user 3.08 s, sys: 0.00 s, tota
Comment #3 on issue 1598 by ondrej.certik: New polynomials manipulation
module
http://code.google.com/p/sympy/issues/detail?id=1598
(the test tests a bug in py.test, that it fails to execute two files in the
sympy
tree with the same filenames, e.g. one in mpmath and one in polys)
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Comment #4 on issue 1598 by ondrej.certik: New polynomials manipulation
module
http://code.google.com/p/sympy/issues/detail?id=1598
Mateusz, would you manage to use cython to speed up the factorization a
bit? Just for
fun, so that I can show it on scipy09, as an example of using cython. Here
Comment #5 on issue 1598 by ondrej.certik: New polynomials manipulation
module
http://code.google.com/p/sympy/issues/detail?id=1598
And for this:
In [5]: a = (x+y+sin(z))**20
In [6]: b = a.expand()
In [7]: time factor(b)
CPU times: user 3.38 s, sys: 0.00 s, total: 3.38 s
Wall time: 3.46 s
O
Comment #6 on issue 1598 by smichr: New polynomials manipulation module
http://code.google.com/p/sympy/issues/detail?id=1598
SO NICE to see the changes...this is going to make some of my other work
much easier.
Thanks!
I noticed that expressions with NumberSymbols can be made into polys, but
Comment #3 on issue 1429 by asmeurer: matches fails to match differential
equation
http://code.google.com/p/sympy/issues/detail?id=1429
So I found another issue. I am investigating now. This is with the fix I
outlined above applied, so it may not be
related. But it is similar. The follow
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