conjugate cannot be refined

[Chong Wang]

I wonder why the following code will not remove conjugate:

from sympy import *
x = Symbol('x')
refine(conjugate(x), Q.real(x))

the outcome is:

conjugate(x)

I wonder why refine does't remove the conjugate function.

BTW, Mathematica also handles conjugate rather poorly. I wonder whether conjugate is hard to deal with.

[Aaron Meurer]

The issue is that refine() has very little implemented so far. It's
mostly a proof-of-concept at this point. You'll get better results for
now if you use the old assumptions, i.e., x = Symbol('x', real=True).

Aaron Meurer

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