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quasiconcave function

См. также в других словарях:

  • quasiconcave — adjective said of a function, if the inverse image of any set of the form (a,∞) for that function is a convex set. Ant: quasiconvex See Also: quasiconcavity …   Wiktionary

  • Quasiconvex function — In mathematics, a quasiconvex function is a real valued function defined on an interval or on a convex subset of a real vector space such that the inverse image of any set of the form ( infty,a) is a convex set. Definition and… …   Wikipedia

  • Concave function — In mathematics, a concave function is the negative of a convex function. A concave function is also synonymously called concave downwards, concave down, convex upwards, convex cap or upper convex. Contents 1 Definition 2 Properties 3 Examples …   Wikipedia

  • Maximum theorem — The maximum theorem provides conditions for the continuity of an optimized function and the set of its maximizers as a parameter changes. The statement was first proven by Claude Berge in 1959[1]. The theorem is primarily used in mathematical… …   Wikipedia

  • Gérard Debreu — Walrasian economics Born July 4, 1921(1921 07 04) Calais …   Wikipedia

  • quasiconvex — adjective said of a function, if the inverse image of any set of the form ( ∞,a) for that function is a convex set. Ant: quasiconcave See Also: quasiconvexity …   Wiktionary

  • Sion's minimax theorem — In mathematics, and in particular game theory, Sion s minimax theorem is a generalization of John Von Neumann s minimax theorem.It states:Let X be a compact convex subset of a linear topological space and Y a convex subset of a linear topological …   Wikipedia

  • Debreu — Gérard Debreu Gérard Debreu Gérard Debreu (Calais, 4 juillet 1921 – Paris, 31 décembre 2004 (à 83 ans)) est un économiste …   Wikipédia en Français

  • Gerard Debreu — Gérard Debreu Gérard Debreu Gérard Debreu (Calais, 4 juillet 1921 – Paris, 31 décembre 2004 (à 83 ans)) est un économiste …   Wikipédia en Français

  • Gérard Debreu — (Calais, 4 juillet 1921 – Paris, 31 décembre 2004 (à 83 ans)) est un économiste français possédant la doub …   Wikipédia en Français

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