Issue 1837 in sympy: 0**(x-2) becomes (oo)**(2-x)

2010-02-20 Thread sympy
Status: Accepted Owner: smichr Labels: Type-Defect Priority-Medium New issue 1837 by smichr: 0**(x-2) becomes (oo)**(2-x) http://code.google.com/p/sympy/issues/detail?id=1837 It seems to me that if the base is 0 sympy should not extract a minus from the exponent and invert the base. It should

Re: Issue 1828 in sympy: Visual factorint()

2010-02-20 Thread sympy
Updates: Status: Started Cc: Vinzent.Steinberg Labels: -Priority-Medium Priority-Critical NeedsReview Comment #4 on issue 1828 by asmeurer: Visual factorint() http://code.google.com/p/sympy/issues/detail?id=1828 I forgot to test this in Python2.5/2.4, which apparently

Issue 1838 in sympy: Add support for [0]*S(5), etc.

2010-02-20 Thread sympy
Status: Accepted Owner: asmeurer Labels: Type-Enhancement Priority-Medium NeedsReview New issue 1838 by asmeurer: Add support for [0]*S(5), etc. http://code.google.com/p/sympy/issues/detail?id=1838 User xvedejas on IRC showed me a feature of Python that I did not know about. [0]*5 gives [0,

Re: Issue 1829 in sympy: release 0.6.7

2010-02-20 Thread sympy
Comment #12 on issue 1829 by asmeurer: release 0.6.7 http://code.google.com/p/sympy/issues/detail?id=1829 If you are going to include the latest master up to the visual-factorint, there is a critical fix on issue 1828 that prevents sympy from working in python2.4/2.5. How could we doctest