On the symmetric vector quasi-equilibrium problems

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Abstract

In this paper we, using a particular technique, consider the symmetric vector quasi-equilibrium problems in the Hausdorff topological vector space. As applications of our existence theorem, a coincidence point theorem and the existence of vector optimization problem for a pair of vector-valued mappings are obtained. Moreover, we answer an open question raised by Fu in [J.Y. Fu, Symmetric vector quasi-equilibrium problems, J. Math. Anal. Appl. 285 (2003) 708–713].

Keywords

Symmetric vector quasi-equilibrium problem
Properly quasi-convex
Acyclic map
Admissible set

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