摘要
本文的主要结果是:S-闭空间对既开又闭的子空间遗传;遗传正规的S-闭空间对闭子空间遗传;S-闭空间的有限和是S-闭空间;给出S-闭空间的积非S-闭的一个例子;若T_2空间的某一子集是S-闭的,则这一子集是闭的.
The main results are as follows:
S-closed spaces is hereditary -with respect to opened-closed subspaces.The S-closed space of hereditarily normal is hereditary with respect to closed subspaces.The finite sum of S-closed spaces is S-closed space.An example is given for the S-closed spaces cartesian product is non-S-closed space. Every S-closed subspace of T2 space X is a closed subsets of X.
出处
《华东交通大学学报》
1992年第1期61-66,共6页
Journal of East China Jiaotong University
