Regularity results for semimonotone operators

AUTOR(ES)

Otero, Rolando Gárciga, Iusem, Alfredo

FONTE

Computational & Applied Mathematics

DATA DE PUBLICAÇÃO

2011

RESUMO

We introduce the concept of ρ-semimonotone point-to-set operators in Hilbert spaces. This notion is symmetrical with respect to the graph of T, as is the case for monotonicity, but not for other related notions, like e.g. hypomonotonicity, of which our new class is a relaxation. We give a necessary condition for ρ-semimonotonicity of T in terms of Lispchitz continuity of [T + ρ-11]-1 and a sufficient condition related to expansivity of T. We also establish surjectivity results for maximal ρ-semimonotone operators.

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