关键词: semiordered topological spaces, upper half-closed set, relative compact set, set-valued increasing operators, fixed point

Abstract: In this paper,the fixed point theorems of composite set-valued increasing operators are given.As a corollary,the fixed point theorem for increasing operator of none-continuity and none- compactness conditions is also given.Some relevant results are improved and generalized.

Key words: semiordered topological spaces, upper half-closed set, relative compact set, set-valued increasing operators, fixed point