Almost convex functions

Marek Kuczma

Displaying similar documents to “Almost convex functions”

Almost $λ$ -convex and almost Wright-convex functions

Mirosław Adamek (2003)

Mathematica Slovaca

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Remarks on extensions of the Himmelberg fixed point theorem.

Komiya, Hidetoshi, Park, Sehie (2007)

Fixed Point Theory and Applications [electronic only]

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Approximate fixed point theorems for the class of almost S-KKM $_{𝒞}$ mappings in abstract convex uniform spaces.

Chang, Tong-Huei, Chen, Chi-Ming, Huang, Yueh-Hung (2009)

Fixed Point Theory and Applications [electronic only]

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Almost approximately convex functions

Roman Ger (1988)

Mathematica Slovaca

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Simultaneous almost minimization of convex functions and duals of results related to maximal monotonicity.

Simons, S. (1995)

Journal of Convex Analysis

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Convex half-spaces

Marek Lassak (1984)

Fundamenta Mathematicae

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Directional derivates and almost everywhere differentiability of biconvex and concave-convex operators.

Mohamed Jouak, Lionel Thibault (1985)

Mathematica Scandinavica

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Convexity and almost convexity in groups

Witold Jarczyk (2013)

Banach Center Publications

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We give a review of results proved and published mostly in recent years, concerning real-valued convex functions as well as almost convex functions defined on a (not necessarily convex) subset of a group. Analogues of such classical results as the theorems of Jensen, Bernstein-Doetsch, Blumberg-Sierpiński, Ostrowski, and Mehdi are presented. A version of the Hahn-Banach theorem with a convex control function is proved, too. We also study some questions specific for the group setting,...