Status: Accepted Owner: ondrej.certik CC: hazelnusse Labels: Type-Defect Priority-High
New issue 1327 by ondrej.certik: Derivative doesn't play well with noncommutative symbols http://code.google.com/p/sympy/issues/detail?id=1327 In [1]: A = Symbol("A", commutative=False) In [2]: A*f(x)*A Out[2]: 2 f(x)⋅A In [3]: A*f(x).diff(x)*A Out[3]: d A⋅──(f(x))⋅A dx In [4]: [2] is correct, but [3] should return f'(x) * A^2. This breaks some code in pydy. -- You received this message because you are listed in the owner or CC fields of this issue, or because you starred this issue. You may adjust your issue notification preferences at: http://code.google.com/hosting/settings --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sympy-issues" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sympy-issues?hl=en -~----------~----~----~----~------~----~------~--~---
