Locally Compact Spaces with Defects

被引:1
作者
Zailai, Mohmmad [1 ]
机构
[1] King Abdulaziz Univ, Fac Sci, Dept Math, POB 80200, Jeddah 21589, Saudi Arabia
来源
EUROPEAN JOURNAL OF PURE AND APPLIED MATHEMATICS | 2023年 / 16卷 / 02期
关键词
Compact; locally compact; defects; Tychonoff;
D O I
10.29020/nybg.ejpam.v16i2.4767
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We call a topological space X a locally compact space with defects if all points in X possess compact neighborhoods except for some points. We investigate this weaker version of local compactness. We show that for x is an element of X' if the partition of singletons of X\(X' ? (U\U)) is locally finite, where U X is an open neighborhood of x, then X is a Tychonoff space. Let X be a T1c locally compact space with defects such that each x is an element of X' has an open neighborhood U such that U is a union of pairwise disjoint compact subsets & fs is an element of S Fs. Then, we show that if the family {Fs}s is an element of S is locally finite except for a finite number of points, then X is a Tychonoff space.
引用
收藏
页码:1228 / 1235
页数:8
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