
Minimax Theory and its Applications 05 (2020), No. 1, 001006 Copyright Heldermann Verlag 2020 Erratum to "QuasiEquilibrium Problems and Fixed Point Theorems of the Sum of l.s.c. and u.s.c. Mappings" Nguyen Xuan Tan Institute of Mathematics, 18 Hoang Quoc Viet, 10307 Hanoi, Vietnam nxtan@math.ac.vn Nguyen Quynh Hoa Thai Nguyen University of Economics and Business Administration, Tan Thinh Ward, Thai Nguyen City, Vietnam hoakhcb@gmail.com Nguyen Ba Minh Thoungmai University, Hanoi, Vietnam baminhnguyen@tmu.edu.vn The purpose of this note is to correct the proof of Theorem 3.1 in our paper "Quasiequilibrium problems and fixed point theorems of the sum of l.s.c. and u.s.c. mappings", Minimax Theory and its Applications 3(1) (2018) 5772. We made a mistake in the use of Sion's Minimax Theorem. Keywords: Erratum, quasiequilibrium problem, upper semicontinuous mapping, lower semicontinuous mapping, fixed point theorem. MSC: 49J27, 49J53, 91B50, 90C48. [ Fulltextpdf (80 KB)] for subscribers only. 