Thời gian: 9h thứ 6, ngày 15/9/2017
Địa điểm: Phòng seminar tầng 5 nhà A6, Viện Toán học, 18 Hoàng Quốc Việt, Cầu Giấy, Hà Nội
Tóm tắt: We first formulate generalized quasi-equilibrium problems concerning multivalued mappings and give some sufficient conditions to the existence of their solutions. In particular, we establish several results on the existence of fixed points of the sum of l.s.c  and u.s.c mappings. These results generalize some well-known fixed point theorems obtained by previous authors as Ky Fan, F. E. Browder and Ky Fan, X. Wu, L. J. Lin, and Z. T. Yu,.... Lastly, we apply the obtained results to quasi-equilibrium problems.