Comment #6 on issue 3979 by [email protected]: Maximum recursion depth
error in Sympy when using non commutative symbols
http://code.google.com/p/sympy/issues/detail?id=3979
It isn't necessary to do that anyway. Function by default inherits the
commutativity of its arguments:
In [22]: exp(Symbol('A', commutative=False)).is_commutative
Out[22]: False
What about reducing the size of the numbers in the exponentials? That might
correspond to the degree of a polynomial, and if some polynomial algorithm
is implemented recursively, it won't work unless the degree is less than
900 or so. Issue 3887 is similar.
By the way, I'll step through this in a debugger tomorrow and see what's
really going on.
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