摘要
通过引入集值算子的下增、上增、全增、强增和半序集上的全序拟备集、全序自备集等概念，讨论了由单值算子与集值算子复合而成的集值增算子的不动点的存在性。
By introducing the concepts of the lower increasing,upperincreasing ,total increasing and strong increasing for set valued operators and the concepts of totally ordered quasi complete set and totally self complete set in semiordered set ,the existence of fixed point for the set valued increasing operators composed of a single valued operator and a set valued operator is discussed.Some results in the present are improved and generalized.
出处
《辽宁师范大学学报（自然科学版）》
CAS
1996年第3期192-196,共5页
Journal of Liaoning Normal University:Natural Science Edition
