In combinat/free_module.py, CombinatorialFreeModule, I find the doctest
below.
Do we *really* want that 5/3 is not in CombinatorialFreeModule(QQ,["a",
"b"])???
Martin
def __contains__(self, x):
"""
TESTS::
sage: F = CombinatorialFreeModule(QQ,["a", "b"])
I need help with https://trac.sagemath.org/ticket/34817
Essentially, I have a list P and an object g such that g in P but g not in
set(P).
How could this happen?
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Hi Everyone,
I'm sorry if this has been discussed, but I can't find a discussion. I
noticed the following behavior:
sage: matrix(GL(2),2,[1,0,0,1]) in GL(2,CC)
True
so 'in' ignores base ring. The problem is that __contains__ for
general_linear.pyx and special_linear.pyx only check whether a
