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@24:56 Typo here: the conditional expectation of XY given X=Y is 5/2, not 5/4. That's still not equal to (3/2)^2.
Thank you a lot for what you present ...How we can proof E.g ?
@13:43 Why if A is in F_{\geq s}, then A has the form X_t^{-1}(B) for some t >= s?
@24:56 Typo here: the conditional expectation of XY given X=Y is 5/2, not 5/4. That's still not equal to (3/2)^2.
Thank you a lot for what you present ...How we can proof E.g ?
@13:43 Why if A is in F_{\geq s}, then A has the form X_t^{-1}(B) for some t >= s?