Comment #10 on issue 3129 by nathan.f...@gmail.com: Drastic change to
sympy.stats: Adding concept of Probability Distributions on surface level
http://code.google.com/p/sympy/issues/detail?id=3129
Okay then... why do PSpaces need a symbol bound to them? Printing out
pspace(X) gives us a domain and a density function (or map for discrete
rvs). This can be accomplished by using sets to represent the domain and
Lambdas for the density. I think there are some cool things we can do with
making PSpaces (soon to be distributions?) static, like capture the fact
that
X = Normal(2, 3).new('X')
Z = (X-2)/3
pspace(Z)
Normal(0, 1)
Basically, capturing relationships of transformations of variables. You're
right that this can cause complications with lots of compound variables,
but it's too useful of a feature to disregard...
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