摘要
本文给出了单值映象和集值映象相容和次相容的两个定义,讨论了它们与已知定义之间的关系;得到了一些单值映象对和集值映象对的公共不动点定理.
In this paper,we introduce two definitions of compatility andsubcompatility between set-valued mappings and single-valued mappings andprove a number of results concerning the existence of common fixed points forfour mappings satisfying certain contractive condition in a complete metricspace,the results improve,generalize and unify the main results of [4—9].
出处
《曲阜师范大学学报（自然科学版）》
CAS
1992年第1期6-10,共5页
Journal of Qufu Normal University(Natural Science)
关键词
单值映象和集值映象
相容映象
次相容映象
公共不动点定理
single-valued mappings and set-valued mappings
compatible mappings
subeompatible mappings
common fixed point theorems
