A Note on Stochastic Dominance and Compactness

Nendel M (2019) Center for Mathematical Economics Working Papers; 623.
Bielefeld: Center for Mathematical Economics.

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Diskussionspapier | Veröffentlicht | Englisch
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Abstract / Bemerkung
In this work, we discuss completeness for the lattice orders of first and second order stochastic dominance. The main results state that, both, first and second order stochastic dominance induce Dedekind super complete lattices, i.e. lattices in which every bounded nonempty subset has a countable subset with identical least upper bound and greatest lower bound. Moreover, we show that, if a suitably bounded set of probability measures is directed (e.g. a lattice), then the supremum and infimum w.r.t. first or second order stochastic dominance can be approximated by sequences in the weak topology or in the Wasserstein-1 topology, respectively. As a consequence, we are able to prove that a sublattice of probability measures is complete w.r.t. first order stochastic dominance or second order stochastic dominance and increasing convex order if and only if it is compact in the weak topology or in the Wasserstein-1 topology, respectively. This complements a set of characterizations of tightness and uniform integrability, which are discussed in a preliminary section.

AMS 2010 Subject Classification: 60E15; 60B10; 06B23
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623
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17
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Nendel M. A Note on Stochastic Dominance and Compactness. Center for Mathematical Economics Working Papers. Vol 623. Bielefeld: Center for Mathematical Economics; 2019.
Nendel, M. (2019). A Note on Stochastic Dominance and Compactness (Center for Mathematical Economics Working Papers, 623). Bielefeld: Center for Mathematical Economics.
Nendel, M. (2019). A Note on Stochastic Dominance and Compactness. Center for Mathematical Economics Working Papers, 623, Bielefeld: Center for Mathematical Economics.
Nendel, M., 2019. A Note on Stochastic Dominance and Compactness, Center for Mathematical Economics Working Papers, no.623, Bielefeld: Center for Mathematical Economics.
M. Nendel, A Note on Stochastic Dominance and Compactness, Center for Mathematical Economics Working Papers, vol. 623, Bielefeld: Center for Mathematical Economics, 2019.
Nendel, M.: A Note on Stochastic Dominance and Compactness. Center for Mathematical Economics Working Papers, 623. Center for Mathematical Economics, Bielefeld (2019).
Nendel, Max. A Note on Stochastic Dominance and Compactness. Bielefeld: Center for Mathematical Economics, 2019. Center for Mathematical Economics Working Papers. 623.
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