摘要
给出并证明了拓扑空间中有关星加细覆盖的几个关系式,并由此证明了一个开覆盖序列u(k/2n)的包含关系: .
This paper gives and proves a few formulas of star refinement in topological space. According
to it,we prove a contain relation of an open covering sequence u(k/2n), It is u .
出处
《德州学院学报》
2004年第2期15-17,共3页
Journal of Dezhou University
关键词
覆盖
加细
星加细
covering
refinement
star refinement
