a Department of Mathematics, Teacher College, Cantho University, Cantho, Viet Nam b Department of Mathematics, International University, Viet Nam National University, Hochiminh City, 227 Nguyen Van Cu, D.5, Hochiminh City, Viet Nam
Abstract:
In this paper we establish sufficient conditions for the solution set of parametric multivalued vector quasiequilibrium problems to be semicontinuous. All kinds of semicontinuity are considered: lower semicontinuity, upper semicontinuity, Hausdorff upper semicontinuity and closedness. Moreover, we investigate both the “weak” and “strong” solutions of quasiequilibrium problems.