Status: Valid
Owner: ----
Labels: Type-Defect Priority-Medium NonCommutative Polynomial
New issue 3370 by [email protected]: Order() does not work with
noncommutative symbol
http://code.google.com/p/sympy/issues/detail?id=3370
It is currently not possible to mix Order(x) with expressions containing a
noncommutative symbol:
In [1]: M=Symbol('M', commutative=False)
In [2]: 1+M*x+Order(x**2)
Out[2]: 1 + x*M + O(x**2)
In [3]: _*M
Out[3]: (1 + x*M + O(x**2))*M
In [4]: expand(_)
results in PolynomialError: non-commutative expressions are not supported
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