摘要
证明了Ａ１可数紧Ｔ２空间Ｘ上的上半连续闭值对应存在不变可数紧子集。
In this paper, we prove the following theorem:(1)There exist fixed sets of upper semicontinuous closed valued correspondences on A 1 and T 1 countably compact spaces;(2) There exist fixed sets of uppersemicontinuous closed set correspondences on T 1 countably compact spaces.
出处
《铁道师院学报》
1998年第4期30-32,共3页
Journal of Suzhou Railway Teachers College(Natural Science Edition)
基金
江苏省教委自然科学基金
关键词
不变集
上半连续
拓扑空间
可数紧空间
fixed set, upper semicontinuous, closed valued (closed set) correspondences
