Comment #2 on issue 3148 by asmeu...@gmail.com: Too many constants from
dsolve()
http://code.google.com/p/sympy/issues/detail?id=3148
I wrote to the list about this:
http://groups.google.com/group/sympy/browse_thread/thread/e10cb5208b870601.
I think such an algorithm could also be useful
Comment #1 on issue 3148 by asmeu...@gmail.com: Too many constants from
dsolve()
http://code.google.com/p/sympy/issues/detail?id=3148
In particular, there are at least two issues:
- In the more complex 1st order methods, such as separable and homogeneous
coefficients, where f(x) can appear
Comment #1 on issue 3149 by asmeu...@gmail.com: solve() doesn't work when
it should
http://code.google.com/p/sympy/issues/detail?id=3149
I think it might be related to calling logcombine with force=True inside
dsolve. If you do that it works:
In [105]: print solve(logcombine(dsolve(2*x*f
Status: Accepted
Owner:
Labels: Type-Defect Priority-Medium Solvers
New issue 3149 by asmeu...@gmail.com: solve() doesn't work when it should
http://code.google.com/p/sympy/issues/detail?id=3149
Consider this example from the docstring of
ode.ode_1st_homogeneous_coeff_best:
In [99]: dso
Updates:
Status: Accepted
Comment #3 on issue 3069 by asmeu...@gmail.com: dsolve gets too many
constants for a first order linear ode
http://code.google.com/p/sympy/issues/detail?id=3069
I agree. See issue 2235 (actually, 1st_linear should go before separable
because the solution i
Status: Accepted
Owner:
Labels: Type-Defect Priority-Medium Solvers
New issue 3148 by asmeu...@gmail.com: Too many constants from dsolve()
http://code.google.com/p/sympy/issues/detail?id=3148
We need to clean up the constant simplification, and more importantly, the
format of the output o
Comment #1 on issue 3043 by asmeu...@gmail.com: NoSuchDisplayException in
test_args
http://code.google.com/p/sympy/issues/detail?id=3043
Another exception is OSError. From Tomo on the mailing list:
sympy/core/tests/test_args.py:test_all_classes_are_tested
_
Updates:
Labels: -CodeInCategory-Code -CodeInDifficulty-Medium
-CodeInImportedIntoMelange NeedsReview smichr
Comment #33 on issue 2552 by smi...@gmail.com: (1/(x*y)).subs(x*y,
whatever) doesn't work
http://code.google.com/p/sympy/issues/detail?id=2552
(No comment was entered for this chan
Updates:
Status: NeedsDecision
Mergedinto:
Comment #3 on issue 3134 by asmeu...@gmail.com: Symbol(zero=True) probably
shouldn't be allowed
http://code.google.com/p/sympy/issues/detail?id=3134
(No comment was entered for this change.)
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Updates:
Blockedon: 3134
Comment #3 on issue 3006 by asmeu...@gmail.com: sign(Symbol('z',
zero=True)) -> sign(z)
http://code.google.com/p/sympy/issues/detail?id=3006
I think it's better to block this issue on that one.
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Issue 3134: Symbol(zero=True) probably shouldn't be allowed
http://code.google.com/p/sympy/issues/detail?id=3134
This issue is now blocking issue 3006.
See http://code.google.com/p/sympy/issues/detail?id=3006
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Status: Accepted
Owner:
Labels: Type-Enhancement Priority-Medium Polynomial Simplify
New issue 3147 by asmeu...@gmail.com: Multivariate partial fraction
decomposition
http://code.google.com/p/sympy/issues/detail?id=3147
apart() currently does not support multivariate partial fraction
d
Comment #2 on issue 3006 by smi...@gmail.com: sign(Symbol('z', zero=True))
-> sign(z)
http://code.google.com/p/sympy/issues/detail?id=3006
Issue 3134 has been merged into this issue.
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Updates:
Status: Duplicate
Mergedinto: 3006
Comment #1 on issue 3134 by smi...@gmail.com: Symbol(zero=True) probably
shouldn't be allowed
http://code.google.com/p/sympy/issues/detail?id=3134
(No comment was entered for this change.)
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Updates:
Labels: -Priority-Medium Priority-High
Comment #2 on issue 3038 by smi...@gmail.com: sign change in evalf of
complex value as precision is increased
http://code.google.com/p/sympy/issues/detail?id=3038
Here is another symptom, perhaps.
Substitution of two forms of an express
Updates:
Labels: NeedsReview smichr
Comment #1 on issue 3146 by smi...@gmail.com: order of Boolean args when
pprint'ed
http://code.google.com/p/sympy/issues/detail?id=3146
Although the pprint issue is not fixed, some sorting issues are addressed
in https://github.com/sympy/sympy/pul
Updates:
Status: Fixed
Comment #2 on issue 3144 by smi...@gmail.com: Commutator doctest failure in
Python 3 in master
http://code.google.com/p/sympy/issues/detail?id=3144
It should be ok now.
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Updates:
Labels: -Priority-Medium Priority-Critical
Comment #5 on issue 3109 by smi...@gmail.com: sqrt(exp(4*a)) != exp(2*a)
http://code.google.com/p/sympy/issues/detail?id=3109
There are problems with how Pow.as_numer_denom works that leads to the
following error:
>>> print fill
Updates:
Labels: NeedsReview smichr
Comment #1 on issue 3145 by smi...@gmail.com: simultaneous substitution
http://code.google.com/p/sympy/issues/detail?id=3145
The use of the parallel keyword is possible in
https://github.com/sympy/sympy/pull/690 . This allows all substitutions to
t
Updates:
Status: Started
Owner: mrock...@gmail.com
Comment #5 on issue 3123 by mrock...@gmail.com: Naming conventions in
sympy/stats/
http://code.google.com/p/sympy/issues/detail?id=3123
https://github.com/sympy/sympy/pull/1122
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Updates:
Status: Started
Owner: mrock...@gmail.com
Comment #1 on issue 3125 by mrock...@gmail.com: Is matrixify() for internal
use?
http://code.google.com/p/sympy/issues/detail?id=3125
This line has been removed in the following pull
https://github.com/sympy/sympy/pull/1121
Status: Accepted
Owner:
Labels: Type-Defect Priority-Medium
New issue 3146 by smi...@gmail.com: order of Boolean args when pprint'ed
http://code.google.com/p/sympy/issues/detail?id=3146
Although the args when printed regularly appear to be sorted,
>>> Nand(b,a,c)
Or(Not(a), Not(b),
Comment #1 on issue 3144 by julien.r...@gmail.com: Commutator doctest
failure in Python 3 in master
http://code.google.com/p/sympy/issues/detail?id=3144
Also in python 2.7 64-bit. Git bisect leads to:
7dde2b2a87ca161f45fd64ccd64161055c673d8a is the first bad commit
commit 7dde2b2a87ca161f45f
Updates:
Status: Fixed
Comment #2 on issue 3081 by smi...@gmail.com: Mul.is_positive gets very
slow for a 15-factor term
http://code.google.com/p/sympy/issues/detail?id=3081
(No comment was entered for this change.)
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Status: Started
Owner:
Labels: Type-Defect Priority-Medium
New issue 3145 by smi...@gmail.com: simultaneous substitution
http://code.google.com/p/sympy/issues/detail?id=3145
An option that we might consider for substitution is a "simultaneous"
option where any arg that is targeted for sub
Comment #2 on issue 3060 by smi...@gmail.com: use of evalf() needs review
http://code.google.com/p/sympy/issues/detail?id=3060
It appears that the first observation of evalf() being used to determine if
something is a Number is wrong. After evalf'ing, the result is used in the
return value.
Status: Accepted
Owner:
Labels: Type-Defect Priority-Critical
New issue 3144 by asmeu...@gmail.com: Commutator doctest failure in Python
3 in master
http://code.google.com/p/sympy/issues/detail?id=3144
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