局部凸空间非扩张型集值映射的不动点定理

Fixed Point Theorems for Set-Valued Mappings of Nonexpansive Type in Locally Convex Spaces

In the papers [1,2] etc.,the fixed point problems were studied for the mappingsof nonexpansive type in locally convex topological vector spaces,and some importantconclusions were extented.The work is continued in our paper,and we obtain moregeneral theorems with boundary conditions for the set-valued mappings of nonexpansivetype.The theorems in [3,4,5] are generalized.