Updates:
Status: Fixed
Comment #16 on issue 2696 by [email protected]: Assumptions fail for
non-commutative symbols
http://code.google.com/p/sympy/issues/detail?id=2696
The pull request has been committed but the issue tracker wasn't updated:
commit 09409374fb9d5e468a0dd771f145c884f86ba472
Merge: d26aadc 6a357cf
Author: Christopher Smith <[email protected]>
Date: Wed Mar 14 19:20:39 2012 -0700
Merge pull request #1116 from smichr/commut
Symbol commutativity patches
And indeed this is fixed:
In [1]: from sympy import *
In [2]: x=Symbol('x', commutative=False)
In [3]: x.is_irrational
Out[3]: False
In [4]: (-x).is_irrational
Out[4]: False
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