Issue 1538 in sympy: root of negative number

Status: Accepted Owner: smichr Labels: Type-Defect Priority-High New issue 1538 by smichr: root of negative number http://code.google.com/p/sympy/issues/detail?id=1538 Can someone find out where this is originiting? Sympy can correctly compute 1/imag_number and can compute the nth rooth of a

Issue 1538 in sympy: root of negative number in denominator

Updates: Summary: root of negative number in denominator Comment #1 on issue 1538 by smichr: root of negative number in denominator http://code.google.com/p/sympy/issues/detail?id=1538 You can see the problem perhaps more clearly from this: s=S(1)/6 1/(-1)**s -(-1)**(5/6)

Issue 1467 in sympy: sorting values with imaginary numbers in radical

Comment #5 on issue 1467 by fab...@fseoane.net: sorting values with imaginary numbers in radical http://code.google.com/p/sympy/issues/detail?id=1467 Patch is nice and makes sense. I don't like however that we are resorting to __nonzero__ when ordering should be done in __cmp__, but I

Issue 1467 in sympy: sorting values with imaginary numbers in radical

Updates: Status: Started Labels: -NeedsReview NeedsBetterPatch Comment #6 on issue 1467 by fab...@fseoane.net: sorting values with imaginary numbers in radical http://code.google.com/p/sympy/issues/detail?id=1467 BTW, at some time we should rename all those __nonzero__ methods

Issue 1537 in sympy: There are certain cases of inversed operations where it seems like sympy might do better reducing

Comment #4 on issue 1537 by tom.denniston: There are certain cases of inversed operations where it seems like sympy might do better reducing http://code.google.com/p/sympy/issues/detail?id=1537 That's really nice. One thing I noticed from experimenting is that x doesn't need to be positive

Issue 1539 in sympy: 8**(-1/3) = 1 (now equals 1/2)

Status: Accepted Owner: smichr Labels: Type-Defect Priority-High NeedsReview New issue 1539 by smichr: 8**(-1/3) = 1 (now equals 1/2) http://code.google.com/p/sympy/issues/detail?id=1539 While searching for the solution to 1538 I found another error which is corrected with the attached patch.

Issue 1538 in sympy: root of negative number in denominator

Updates: Labels: Milestone-Release0.6.6 Comment #2 on issue 1538 by ondrej.certik: root of negative number in denominator http://code.google.com/p/sympy/issues/detail?id=1538 (No comment was entered for this change.) -- You received this message because you are listed in the owner or

Issue 1538 in sympy: root of negative number in denominator

Updates: Status: Fixed Comment #5 on issue 1538 by fab...@fseoane.net: root of negative number in denominator http://code.google.com/p/sympy/issues/detail?id=1538 I squashed both patches into a single commit and pushed this in.

Issue 1537 in sympy: There are certain cases of inversed operations where it seems like sympy might do better reducing

Comment #5 on issue 1537 by ondrej.certik: There are certain cases of inversed operations where it seems like sympy might do better reducing http://code.google.com/p/sympy/issues/detail?id=1537 Yes. Btw, we are working on a new assumption system, that would allow us to handle much more