Dual representation of monotone convex functions on L^{0}

We study monotone convex functions ψ : L⁰ (Ω, F, ℙ) → (—∞,∞] and derive a dual representation as well as conditions that ensure the existence of a σ-additive subgradient. The results are motivated by applications in economic agents' choice theory.

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Veröffentlicht in:Proceedings of the American Mathematical Society 2011-11, Vol.139 (11), p.4073-4086
Hauptverfasser: KUPPER, MICHAEL, SVINDLAND, GREGOR
Format: Artikel
Sprache:eng
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Zusammenfassung:We study monotone convex functions ψ : L⁰ (Ω, F, ℙ) → (—∞,∞] and derive a dual representation as well as conditions that ensure the existence of a σ-additive subgradient. The results are motivated by applications in economic agents' choice theory.
ISSN:0002-9939
1088-6826
DOI:10.1090/S0002-9939-2011-10835-9