Abstract. In this paper, we give a new minimax theorem and two new existence theorems of solutions for generalized quasi-variational inequalities in H-spaces. Our results improve and develop some famous results.
PreliminariesIn this paper, our subject is to establish a Sion type minimax theorem and two existence theorems of solutions for generalized quasi-variational inequalities. Our results improve and develop some famous results. In order to establish our main results, we first give some concepts and notations.To begin with we explain the notion of a H-space and some related notions.Let X be a topological space and F(X) the family of all nonempty finite subsets of X. Let Γ A be a family of nonempty contractible subsets of1991 Mathematics Subject Classification. 47H04, 47H10, 49J35, 52A99, 58E35.