Existence of equilibria via Ekeland's principle

JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS

卷:305

Article

Bianchi, M ; Kassay, G ; Pini, R

关键词: equilibrium problem;    system of equilibrium problems;    approximate solution;    Ekeland's principle;   

DOI  :  10.1016/j.jmaa.2004.11.042

来源: Elsevier

【 摘 要 】

In the literature, when dealing with equilibrium problems and the existence of their solutions, the most used assumptions are the convexity of the domain and the generalized convexity and monotonicity, together with some weak continuity assumptions, of the function. In this paper, we focus on conditions that do not involve any convexity concept, neither for the domain nor for the function involved. Starting from the well-known Ekeland's theorem for minimization problems, we find a suitable set of conditions on the function f that lead to an Ekeland's variational principle for equilibrium problems. Via the existence of c-solutions, we are able to show existence of equilibria on general closed sets for equilibrium problems and systems of equilibrium problems. (c) 2004 Elsevier Inc. All rights reserved.

【 授权许可】

Free