Im trying to create the tensor product of two probability spaces using
the structure DiscreteProbabilitySpace.
Say we have
S=['head','tail']
P={'head':1/2,'tail':1/2}
Omega=DiscreteProbabilitySpace(S,P)
I want to construct OmegaxOmega equipped with the product probability
measure. It boils down to construct the dictionary
{['head','head']:1/4, ['head','tail']:1/4,....}
I can construct the cartesian product of S by itself but I can(t
construct a dictionary with SxS as indices since it is no longer
immutable (as far as I understood what was going on). How could I do
that ?
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