摘要
本文主要获得了如下两个Tychonoff 乘积定理:(1) 设X是P空间,Y是强Σ空间,如果X、Y都是σmeso 的,则X×Y是σmeso 紧的。(2) 若{ Xp | p ∈N} 是σmeso 紧的强Σ空间的可数族,则 Πp∈NXp 是σmeso 紧的强Σ空间。
This paper minly proves the following two results: (1) Let X is a P space, Y is a strong Σ space,then X×Y is σ mesocompact if both X and Y are σ mesocompact. (2) If {X p:p∈N} is a coutable family of σ mesocompact strong Σ spaces,then Π p∈NX p is a σ mesocompact strong Σ space.
出处
《重庆师范学院学报(自然科学版)》
1999年第4期48-53,共6页
Journal of Chongqing Normal University(Natural Science Edition)