Ekeland type variational principle with applications to quasi-variational inclusion problems

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Abstract

In this paper, we study the Ekeland type variational principle, a Caristi-Kirk type fixed point theorem and a maximal element theorem in the setting of uniform spaces. By using these results, we establish some existence results for solutions of quasi-variational inclusion problems, quasi-optimization problems and equilibrium problems defined on separated and sequentially complete uniformly spaces.

Original languageEnglish
Pages (from-to)651-661
Number of pages11
JournalNonlinear Analysis, Theory, Methods and Applications
Volume72
Issue number2
DOIs
StatePublished - 15 Jan 2009

Bibliographical note

Funding Information:
In this research, the first and the second authors were supported by the National Science Council of the Republic of China, and the third author was partially supported by the SABIC/Fast Track Research Project No. # SB080004 of King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia. Authors are grateful to the referee for his/her valuable comments and suggestions to improve the previous draft of this paper.

Keywords

  • Caristi-Kirk type fixed point theorem
  • Ekeland type variational principle
  • Lower semicontinuity
  • Quasi-equilibrium problems
  • Quasi-optimization problems
  • Quasi-variational inclusion problems
  • Sequentially lower monotone maps
  • Uniformly spaces

ASJC Scopus subject areas

  • Analysis
  • Applied Mathematics

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