摘要
对B2-可膨胀空间进行研究,得到主要结论如下:(1)若X=lim←{Xα,πβα,∑}并且每个πα是开满映射,如果X是|∑|-完满正规的,并且每个Xα都是B2-可膨胀的,则X是B2-可膨胀的;(2)若X=lim←{Xα,παβ,∑}并且每个πα是开满映射,如果X是遗传|∑|-完满正规的,并且每个Xα都是遗传B2-可膨胀的,则X是遗传B2-可膨胀的。
This paper mainly studies B2-expandable spaces,the main results are：（1）Let X=lim←{Xα,πα^β,∑} and every πα open and onto mapping,if X is ｜∑｜-full normal space,and if every Xα is B2-expandable,then X is B2-expandable.（2）Let X=lim←{Xα,πα^β,∑} and every πα open and onto mapping,if X is hereditarily ｜∑｜-full normal space,and if every Xα is hereditarily B2-expandable,then X is hereditarily B2-expandable.
出处
《江西科学》
2010年第5期600-603,共4页
Jiangxi Science
