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The Fatou Property under Model Uncertainty. (arXiv:1610.04085v1 [math.FA])

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We provide a characterization in terms of Fatou property for weakly closed monotone sets in the space of $\Pcal$-quasisure bounded random variables, where $\Pcal$ is a (possibly non-dominated) class of probability measures. Our results can be applied to obtain a topological deduction of the First Fundamental Theorem of Asset Pricing for discrete time processes and the robust dual representation of (quasi)convex increasing functionals.


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