Mathematics for Economists

(Greg DeLong) #1

Optimal stopping


Theorem


If variablesξandηare independent then one can use the relation

E(f(ξ,η)jξ=x)=E(f(x,η))

which is the same as

E(f(ξ,η)jξ)=E(f(x,η))jx=ξ.
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