Comment #9 on issue 2848 by ronan.l...@gmail.com: Failing test in sympy/solvers/test/test_solvers.py
http://code.google.com/p/sympy/issues/detail?id=2848
I've found a sequence of calls to assumptions that gives a wrong result:
clear_cache() e = I*pi e.is_composite
False
e.is_positive
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