Article
Keywords:
two-dimensional probabilities; extremal measure
Summary:
A properly measurable set ${\cal P} \subset {X} \times M_1({Y})$ (where ${X}, {Y}$ are Polish spaces and $M_1(Y)$ is the space of Borel probability measures on $Y$) is considered. Given a probability distribution $\lambda \in M_1(X)$ the paper treats the problem of the existence of ${X}\times {Y}$-valued random vector $(\xi ,\eta )$ for which ${\cal L}(\xi )=\lambda $ and ${\cal L}(\eta | \xi =x) \in {\cal P}_x$ $\lambda $-almost surely that possesses moreover some other properties such as “${\cal L}(\xi ,\eta )$ has the maximal possible support” or “${\cal L}(\eta | \xi =x)$’s are extremal measures in ${\cal P}_x$’s”. The paper continues the research started in [7].
References:
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Distributions with Given Marginals and Moment Problems. Kluwer, Dordrecht 1997
MR 1614650 |
Zbl 0885.00054
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Radon Measures on Arbitrary Topological Spaces and Cylindrical Measures. Oxford University Press, Oxford 1973
MR 0426084
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Choquet Order and Simplices. (Lectures Notes in Mathematics 1145.) Springer–Verlag, Berlin 1985
MR 0808401 |
Zbl 0578.46010