Updates:
Labels: NeedsReview smichr
Comment #9 on issue 1002 by asmeurer: Symbol('') does not raise an Exception
http://code.google.com/p/sympy/issues/detail?id=1002
'^[a-zA-Z_][a-zA-Z_0-9]*$' doesn't technically represent all valid Python
identifiers, since it doesn't take into
Updates:
Status: Invalid
Comment #2 on issue 1433 by renato.c...@gmail.com: Integrate returns
different result than from Matlab
http://code.google.com/p/sympy/issues/detail?id=1433
Just tried this in master, Out[7] from above gives 10*3**(1/2)*I that
evalf's to 17.3205080756888*I.
Comment #4 on issue 2261 by renato.c...@gmail.com: (1/x).subs(x, 0) is nan
instead of oo or zoo
http://code.google.com/p/sympy/issues/detail?id=2261
In master, this gives oo now, which may be wrong according to issue 2096,
but it's consistent with 1/S(0). I think we should add a test for
Comment #3 on issue 2453 by renato.c...@gmail.com: abs(sympy.I * sympy.pi)
evaluates incorrectly
http://code.google.com/p/sympy/issues/detail?id=2453
I digged a bit into this, and it seems related to assumptions not being
evaluated correctly in line 252 of complexes.py (Abs.eval):
if
Updates:
Status: Fixed
Comment #2 on issue 1951 by renato.c...@gmail.com: sympy.cot(0)=0 rather
than infinity sympy 0.6.6
http://code.google.com/p/sympy/issues/detail?id=1951
This was fixed in 09e072c1, now it returns zoo.
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Comment #11 on issue 1379 by asmeurer: documentation tests fail when run in
interactive mode
http://code.google.com/p/sympy/issues/detail?id=1379
Can we get some more opinions on this? The question is whether we should
import
Updates:
Cc: Vinzent.Steinberg ronan.l...@gmail.com ondrej.c...@gmail.com
Comment #12 on issue 1379 by asmeurer: documentation tests fail when run in
interactive mode
http://code.google.com/p/sympy/issues/detail?id=1379
(No comment was entered for this change.)
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Status: Accepted
Owner: lazov...@gmail.com
Labels: Type-Defect Priority-Medium
New issue 2489 by lazov...@gmail.com: Integral of two delta functions
evaluates incorrectly
http://code.google.com/p/sympy/issues/detail?id=2489
x, x_1, x_2 = symbols('x,x_1,x_2')
f = x_2 * DiracDelta(x-x_2) *
Updates:
Labels: WrongResult
Comment #1 on issue 2489 by lazov...@gmail.com: Integral of two delta
functions evaluates incorrectly
http://code.google.com/p/sympy/issues/detail?id=2489
(No comment was entered for this change.)
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Comment #2 on issue 2489 by julien.r...@gmail.com: Integral of two delta
functions evaluates incorrectly
http://code.google.com/p/sympy/issues/detail?id=2489
Note that there's ambiguity in the expected result; it might as well return
x*DiracDelta(x-x_1)
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Comment #13 on issue 1379 by ondrej.c...@gmail.com: documentation tests
fail when run in interactive mode
http://code.google.com/p/sympy/issues/detail?id=1379
Well, I would really love to continue using sympy.test() and
sympy.doctest(), that's why I implemented it. Just like numpy and
Updates:
Status: Accepted
Labels: -Priority-Critical -Milestone-Release0.7.0 Priority-Medium
Comment #14 on issue 1379 by asmeurer: documentation tests fail when run in
interactive mode
http://code.google.com/p/sympy/issues/detail?id=1379
OK, I reverted the removal commit in
Updates:
Labels: Integration
Comment #3 on issue 2489 by asmeurer: Integral of two delta functions
evaluates incorrectly
http://code.google.com/p/sympy/issues/detail?id=2489
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Labels: EasyToFix
Comment #28 on issue 565 by smi...@gmail.com: integrate does not ommit null
terms and simplify fails to handle them afterwards.
http://code.google.com/p/sympy/issues/detail?id=565
The correct answer is now given (as confirmed with wolfram alpha):
Updates:
Status: Fixed
Comment #5 on issue 1804 by smi...@gmail.com: as_independent could respect
non-commutatives
http://code.google.com/p/sympy/issues/detail?id=1804
(n1*n2*n1).as_independent(n2)
(n1, n2*n1)
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Comment #4 on issue 1296 by smi...@gmail.com: some problem with
notcommutative algebra
http://code.google.com/p/sympy/issues/detail?id=1296
I get
import sympy
b,c=sympy.symbols(b,c,commutative=None)
(b*c**2).conjugate()
conjugate(b)*conjugate(c)**2
(b*c).conjugate()
Comment #6 on issue 1384 by smi...@gmail.com: clean-up Symbol's assumptions
http://code.google.com/p/sympy/issues/detail?id=1384
Vinzent, can this be closed?
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Labels: EasyToFix
Comment #13 on issue 1616 by smi...@gmail.com: Bug in subs
http://code.google.com/p/sympy/issues/detail?id=1616
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Labels: EasyToFix
Comment #2 on issue 2198 by smi...@gmail.com: gotcha addons
http://code.google.com/p/sympy/issues/detail?id=2198
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Status: WontFix
Comment #6 on issue 2343 by smi...@gmail.com: as_poly returns None
http://code.google.com/p/sympy/issues/detail?id=2343
There is nothing to fix. Issue 2346 hs been resolved and the problem above
can be solved by making sure that equations are instantiated with
Comment #1 on issue 2476 by smi...@gmail.com: nth order Derivative
http://code.google.com/p/sympy/issues/detail?id=2476
If this worked, our current Derivative should work:
Derivative(x**3, x, a)
D(x**3, x, a)
_.subs(a, 3)
Traceback (most recent call last):
File stdin,
Comment #29 on issue 565 by renato.c...@gmail.com: integrate does not ommit
null terms and simplify fails to handle them afterwards.
http://code.google.com/p/sympy/issues/detail?id=565
What remains to be done? Write a test?
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Updates:
Labels: -NeedsBetterPatch NeedsReview smichr
Comment #3 on issue 1811 by smi...@gmail.com: separatevars modifications
http://code.google.com/p/sympy/issues/detail?id=1811
see https://github.com/sympy/sympy/pull/422
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Comment #2 on issue 2476 by asmeurer: nth order Derivative
http://code.google.com/p/sympy/issues/detail?id=2476
The syntax would have to be different from the non-symbolic case, because
D(x**3, x, a) already means the derivative of x**3 with respect to x and
then with respect to a. I was
Status: Accepted
Owner: asmeurer
Labels: Type-Enhancement Priority-Medium
New issue 2490 by asmeurer: Create a Mod object for symbolic modulus (x % y)
http://code.google.com/p/sympy/issues/detail?id=2490
Having a Mod object for symbolic moduli (i.e., __mod__, or x % y) would be
useful. For
Comment #4 on issue 2476 by renato.c...@gmail.com: nth order Derivative
http://code.google.com/p/sympy/issues/detail?id=2476
I like these ideas so far, I only disagreee at this point:
Derivative(x**3, x, a).subs(a, 3) should just return Derivative(x**3, x,
a)
This would be inconsistent
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