ON EXISTENCE OF SOLUTION OF IMPLICIT VECTOR EQUILIBRIUM PROBLEMS FOR TRIFUNCTION

TIRTH RAM AND ANU KUMARI KHANNA

Keywords: Equilibrium problem, upper semicontinuity, KKM-map, trifunction.

Abstract

In this work, we introduce and study an extended version of implicit vector equilibrium problems for trifunction in real Hausdorff topological vector spaces. We prove some new existence results for the solution of these problems by using KKM lemma in real Hausdorff topological vector spaces. Some special cases are also discussed.

Center of Excellence in Nonlinear Analysis and Optimization,

Naresuan University, Phitsanulok 65000, Thailand

Tel: +66 5596 3252

Email: narinp@nu.ac.th