摘要
给出了可数Ｓ－闭空间的又一定义，且得到了二个重要特征定理．
In this paper, the concept of countable
S closed spaces is renewed, and two important theorems about the characterizations of
countalbe S closed spaces are obtained.
出处
《华东交通大学学报》
1999年第1期60-63,共4页
Journal of East China Jiaotong University
关键词
可数S-闭空间
S-开集
拓扑空间
countable S closed spaces
S W
accumulation point
S locally finite
S open set
S closed set
