摘要
１９６３年，Ｎ．Ｌ，ｌｅｖｉｎｅ引进了半开集的概念￣［１］，此后人们进行了大量的研究，定义了半分离空间￣［２］，给出了半分离空间与分离空间的关系，本文将讨论半分离空间的几种等价性定理．
The concept of semi-open sets was introdued by N.L.Levine in 1963.Thenceforthsemi-separated space was defined and the relations between them were given. Here the authorhas discussed some theorems on the equivalence of semi-separated spaces.
出处
《海南大学学报（自然科学版）》
1994年第4期291-293,共3页
Natural Science Journal of Hainan University
关键词
半开集
半分离空间
半邻域
拓扑空间
semi-open sets
semi-separated space
semi-neighborhood
topological space
