Re: Issue 1835 in sympy: 1835: coeff changes

2010-02-18 Thread sympy
Comment #1 on issue 1835 by smichr: 1835: coeff changes http://code.google.com/p/sympy/issues/detail?id=1835 It handles noncommutatives in a manner...there are some questions in the commit about it, though. e.g. should (n1*n2 + x*n1).coeff(n1) == 1 + x? Also, its handling of

Re: Issue 1835 in sympy: 1835: coeff changes

2010-02-18 Thread sympy
Comment #2 on issue 1835 by smichr: 1835: coeff changes http://code.google.com/p/sympy/issues/detail?id=1835 OK, I think this is the right behavior: n and m are non-commutative (n*m + m*n*m).coeff(n) # = (1 + m)*n*m 1 + m (n*m + m*n*m).coeff(n, right=True) # = (1 +

Re: Issue 1766 in sympy: expand(power_base=True) is too aggressive

2010-02-18 Thread sympy
Issue 1766: expand(power_base=True) is too aggressive http://code.google.com/p/sympy/issues/detail?id=1766 This issue is now blocking issue 1836. See http://code.google.com/p/sympy/issues/detail?id=1836 -- You received this message because you are listed in the owner or CC fields of this issue,

Issue 1836 in sympy: subs can see the 2 arg sum

2010-02-18 Thread sympy
Status: Accepted Owner: smichr Labels: Type-Defect Priority-Medium New issue 1836 by smichr: subs can see the 2 arg sum http://code.google.com/p/sympy/issues/detail?id=1836 The Mul #*(a+b) automatically gets rewritten as #*a+#*b where # is a number. commit 1836 in smichr 1766 branch updates

Re: Issue 1829 in sympy: release 0.6.7

2010-02-18 Thread sympy
Comment #10 on issue 1829 by smichr: release 0.6.7 http://code.google.com/p/sympy/issues/detail?id=1829 The current master has a doctest in matrices that relies on numpy and thus fails: File C:\documents and settings\chris\sympy\sympy\matrices\matrices.py, line 20 80, in