Set assumptions for TypedSymbol/cast_func/IntegerFunctionTwoArgsMixIn the SymPy way
After having a nearly week long discussion on assumptions in my SymPy PR, I got some idea of how the assumptions in SymPy are working.
It's interesting that you can use Function.__new__(cls, integer=True)
for UndefinedFunction
s like Function('f', interger=True)
but not for subclassese of Function
.
Now things like (2*f.shape[0]).is_integer
are working.
Edited by Stephan Seitz