Semicontinuity of the approximate solution sets of multivalued quasiequilibrium problems

Authors: Lâm Quốc Anh, Phan Quốc Khánh,

https://doi.org/10.1080/01630560701873068

Publisher, magazine: ,

Publication year: 2008

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Abstract

The authors study the set of approximate solutions to multivalued quasi-equilibrium problems in a rather general setting. They derive sufficient conditions for lower/upper semicontinuity and Hausdorff lower/upper semicontinuity of these solution sets. Two types of \(\varepsilon\)-solutions are considered. Quasi-variational inequalities, fixed point problems and quasi-optimization problems are discussed as special cases.

Tags: closedness of multifunctions; \(\varepsilon\)-fixed points; \(\varepsilon\)-quasi-optimization problems; \(\varepsilon\)-solutions; Hausdorff lower and upper semicontinuity; lower and upper semicontinuity; quasi-equilibrium problems; quasi-variational inequalities