Issue 2196: Document assumptions
http://code.google.com/p/sympy/issues/detail?id=2196
This issue is now blocking issue 2877.
See http://code.google.com/p/sympy/issues/detail?id=2877
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Status: Accepted
Owner:
Labels: Type-Defect Priority-Medium WrongResult Assumptions
New issue 2877 by asmeu...@gmail.com: Contradictory facts about infinities
in the new assumptions
http://code.google.com/p/sympy/issues/detail?id=2877
We have
In [13]: ask(Q.real(oo))
Out[13]: False
In
Updates:
Labels: NeedsReview smichr
Comment #17 on issue 1562 by smi...@gmail.com: Have trigsimp apply factor
and Poly.cancel() to sin's and cos's
http://code.google.com/p/sympy/issues/detail?id=1562
https://github.com/sympy/sympy/pull/772
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Updates:
Labels: smichr NeedsReview
Comment #4 on issue 1526 by smi...@gmail.com: simplification using trigsimp
and collect
http://code.google.com/p/sympy/issues/detail?id=1526
https://github.com/sympy/sympy/pull/772
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Updates:
Labels: smichr NeedsReview
Comment #5 on issue 1181 by smi...@gmail.com: Advanced trigonometric
simplification
http://code.google.com/p/sympy/issues/detail?id=1181
https://github.com/sympy/sympy/pull/772
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Labels: smichr NeedsReview
Comment #2 on issue 1395 by smi...@gmail.com: trigsimp doesn't simplify an
expression that == 1
http://code.google.com/p/sympy/issues/detail?id=1395
no flags necessary anymore in
https://github.com/sympy/sympy/pull/772
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Comment #2 on issue 1812 by smi...@gmail.com: trigsimp helper hidden
http://code.google.com/p/sympy/issues/detail?id=1812
https://github.com/sympy/sympy/pull/772
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Updates:
Labels: smichr NeedsReview
Comment #4 on issue 2849 by smi...@gmail.com: integration of
cos(x)/sin(x)**n
http://code.google.com/p/sympy/issues/detail?id=2849
The solution now looks like this after mods of
https://github.com/sympy/sympy/pull/772 :
Comment #7 on issue 2766 by krastano...@gmail.com: Translate tutorial
http://code.google.com/p/sympy/issues/detail?id=2766
Important detail. In the different task discussions we have rather unclear
requirement. So please translate the tutorial.txt file from our _current_
source on github.
Updates:
Status: Fixed
Comment #7 on issue 2100 by smi...@gmail.com: nsimplify rarely works
without setting the tolerance flag
http://code.google.com/p/sympy/issues/detail?id=2100
(No comment was entered for this change.)
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Comment #1 on issue 2863 by krastano...@gmail.com: Plotting failures with
SymPy-Bot
http://code.google.com/p/sympy/issues/detail?id=2863
On my machine (Ubuntu 11.10, 64bit intel atom) the following four commands
do NOT raise an error.
python2.5 ./bit/test sympy/plotting/tests
./bit/test
Comment #2 on issue 2863 by krastano...@gmail.com: Plotting failures with
SymPy-Bot
http://code.google.com/p/sympy/issues/detail?id=2863
The following command does not raise errors:
python2.5 setup.py test
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Comment #3 on issue 2863 by krastano...@gmail.com: Plotting failures with
SymPy-Bot
http://code.google.com/p/sympy/issues/detail?id=2863
The following command does not raise errors:
sympy-bot -i python2.5
I can not reproduce the bug whatever I try.
I was using 2.5.6-final-0
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Updates:
Status: Fixed
Comment #9 on issue 2760 by asmeu...@gmail.com: latex(symbol_names) not
working with ~x
http://code.google.com/p/sympy/issues/detail?id=2760
This was https://github.com/sympy/sympy/pull/755.
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Status: Accepted
Owner:
Labels: Type-Defect Priority-Medium
New issue 2878 by ondrej.c...@gmail.com: numerical evaluation problem
http://code.google.com/p/sympy/issues/detail?id=2878
This is confusing to me:
a = integrate(sin(x)**10, x).diff(x).simplify() - sin(x)**10
a
4
Comment #1 on issue 2878 by asmeu...@gmail.com: numerical evaluation problem
http://code.google.com/p/sympy/issues/detail?id=2878
I think that's what happened. When you did S(0.6), it created a Float
with the default precision (15 digits). evalf'ing it doesn't make a
difference, because
Status: Accepted
Owner:
Labels: Type-Defect Priority-Medium CodeInCategory-Translation
CodeInDifficulty-Medium CodeInMultiple
New issue 2879 by asmeu...@gmail.com: Use gettext for the tutorial and
webpage translations
http://code.google.com/p/sympy/issues/detail?id=2879
See
Comment #1 on issue 2879 by asmeu...@gmail.com: Use gettext for the
tutorial and webpage translations
http://code.google.com/p/sympy/issues/detail?id=2879
For Code-In, create one task for each language for each document.
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Status: New
Owner:
Labels: Type-Defect Priority-Medium
New issue 2880 by zubai...@hotmail.fr: segmentation fault after plotting
http://code.google.com/p/sympy/issues/detail?id=2880
I use IPython console for SymPy 0.7.1 (Python 2.7.2-32-bit), and when I
try to close the window of some
Comment #5 on issue 2838 by elliso...@gmail.com: Move KroneckerDelta out of
the quantum module
http://code.google.com/p/sympy/issues/detail?id=2838
For now both _dagger_ and _eval_dagger are needed. The secondquant module
needs to be refactored and once that happens _dagger_ will go away.
Comment #2 on issue 2878 by ondrej.c...@gmail.com: numerical evaluation
problem
http://code.google.com/p/sympy/issues/detail?id=2878
I see. I think I really do expect to get exactly 0.6 when I write it as
such (using S(0.6). Obviously, if I write it as 0.6, then Python makes it
imprecise
Comment #3 on issue 2878 by ondrej.c...@gmail.com: numerical evaluation
problem
http://code.google.com/p/sympy/issues/detail?id=2878
I see, actually Rational() does it already:
Rational(0.6)
3/5
so my mistake above was using S(0.6) instead of Rational(0.6). So this
should be
Comment #4 on issue 2878 by ondrej.c...@gmail.com: numerical evaluation
problem
http://code.google.com/p/sympy/issues/detail?id=2878
One more comment: This should be investigated in systems like Maple and
Mathematica, to see whether they treat 0.6 as a floating point (no matter
what
Comment #5 on issue 2878 by asmeu...@gmail.com: numerical evaluation problem
http://code.google.com/p/sympy/issues/detail?id=2878
You can also do
In [44]: S(0.6, rational=True)
Out[44]: 3/5
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Comment #6 on issue 2878 by asmeu...@gmail.com: numerical evaluation problem
http://code.google.com/p/sympy/issues/detail?id=2878
I think Maple uses a set machine precision, if I remember correctly.
Anyway, here's what it does for your problem:
a:=-63*sin(x)**4/128 + 63*sin(x)**2/64 +
Updates:
Summary: Add section to the Gotchas about floating point numbers
Labels: -Type-Defect Type-Enhancement Documentation
Comment #7 on issue 2878 by asmeu...@gmail.com: Add section to the Gotchas
about floating point numbers
Comment #6 on issue 2838 by asmeu...@gmail.com: Move KroneckerDelta out of
the quantum module
http://code.google.com/p/sympy/issues/detail?id=2838
Is there an issue for this (secondquant refactoring)? If not, can you
create one (I would do it, but I have no idea what else in that module
Updates:
Labels: -CodeInImportedIntoMelange CodeInMultiple CodeInCategory-Code
Comment #5 on issue 2798 by asmeu...@gmail.com: Research ways to extract
statistics from the issue tracker
http://code.google.com/p/sympy/issues/detail?id=2798
This was done (I've added the script at
Status: Accepted
Owner:
Labels: Type-Defect Priority-Medium Quantum
New issue 2881 by elliso...@gmail.com: Refactory secondquant to use new
quantum modules
http://code.google.com/p/sympy/issues/detail?id=2881
The module sympy.physics.secondquant was created before the new stuff in
Comment #7 on issue 2838 by elliso...@gmail.com: Move KroneckerDelta out of
the quantum module
http://code.google.com/p/sympy/issues/detail?id=2838
Done:
http://code.google.com/p/sympy/issues/detail?id=2881thanks=2881ts=1322536719
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