Status: Accepted
Owner: [email protected]
Labels: Type-Defect Priority-Medium Assumptions
New issue 2324 by [email protected]: i**2 is real and i**3 is not
http://code.google.com/p/sympy/issues/detail?id=2324
If i is declared as imaginary then `ask(i**2, Q.real)` should return True
and `ask(i**3, Q.real)` should be False. Unlike being complex (which
contains real and imaginary as subsets) being imaginary means there is no
real part.
h[5] >>> i = Symbol('i', imaginary=True)
h[5] >>> ask(i**2,Q.real)
h[5] >>> ask(i**3,Q.real)
This is fixed for the old assumption system.
h[5] >>> (i**2).is_real
True
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