Thời gian: 9h30 Thứ 4, ngày 23/10/2019
Địa điểm: Phòng 507, tòa nhà A6, Viện Toán học
Tóm tắt:We first formulate generalized quasi-intersection 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 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, etc.
Lastly, we apply the obtained results to quasi-equilibrium problems of types I, II and mixed quasi-equilibrium problems of these two types.