摘要
本文给出了正则空间、完全 Hausdorff 空间及 Hausdorff 空间的函数刻划,其思想可以追溯到著名的“Urgsohn 引理”.
In this note we give functional characterizations of regular spaces,complete Hausdorff spaces and
Hausdorff spaces.The idea in this note could be traced back to famous Urysohn's Lemma in general
topology.
关键词
拓扑空间
函数
豪斯道夫空间
表示
topological spaces
Hausdorffspace
functions
representations
