General KKM theorem with applications to minimax and variational inequalities

  • Q. H. Ansari*
  • , Y. C. Lin
  • , J. C. Yao
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

In this paper, a general version of the KKM theorem is derived by using the concept of generalized KKM mappings introduced by Chang and Zhang. By employing our general KKM theorem, we obtain a general minimax inequality which contains several existing ones as special cases. As applications of our general minimax inequality, we derive an existence result for saddle-point problems under general setting. We also establish several existence results for generalized variation inequalities and generalized quasi-variational inequalities.

Original languageEnglish
Pages (from-to)17-57
Number of pages41
JournalJournal of Optimization Theory and Applications
Volume104
Issue number1
DOIs
StatePublished - Jan 2000
Externally publishedYes

Keywords

  • Generalized KKM mappings
  • Generalized quasi-variational inequalities
  • Generalized variational inequalities
  • Minimax inequalities
  • Transfer closed-valued mappings
  • γ-transfer lower semi-continuous functions

ASJC Scopus subject areas

  • Management Science and Operations Research
  • Control and Optimization
  • Applied Mathematics

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