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Let $(\Omega,\mathcal F,\mathbb P)$ a probability space, $(X,\mathcal B)$ a measurable space and $m$ a probability measure on $\Omega\times X$ such that its projection on $\Omega $ is equal to $\mathbb P$.

When $m$ has a factorization with respect to $\mathbb P$?

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    What is $(X, \mathcal{B})$ for? I think $m$ is defined over $(\Omega, \mathcal{P})$...2011-11-29
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    Can you double-check your notation, and explain what you mean by "factorization"?2011-11-29
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    I guess paul wants to determine whether there exists a measure $\mu$ such that $m=\mathcal P\otimes \mu$.2012-11-03

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