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正规σ-满正规空间的逆极限
The Invers Limit Normal σ-Fully Normal Spaces
【摘要】 设X是逆系统{Xα,παβ,Λ)的极限,∣Λ∣=λ,假设每个投射πα:X→Xα是开且到上的,X是λ-仿紧的,如果每个Xα是正规σ-满正规的,则X是正规σ-满正规的。进一步还可以得到遗传正规σ-满正规的类似结果.
【Abstract】 In this paper,we shall prove the following theorem:Let X be the inverse limit of an inverse system{Xα,παβ,Λ}and∣Λ∣=λ.Suppose each projections:πα:X→Xα is an open and onto map and X is λ-paracompact.If each Xσ is normal σ-full normal.then X is σ-full normal.the analogoue result for hereditarily normal σ-full normal spaces is obtained.
【关键词】 逆极限;
σ-满正规;
遗传σ-满正规;
【Key words】 inverse limit; subortho compact; hereditarily subprtho compact;
【Key words】 inverse limit; subortho compact; hereditarily subprtho compact;
- 【文献出处】 科技通报 ,Bulletin of Science and Technology , 编辑部邮箱 ,2010年02期
- 【分类号】O189.11
- 【下载频次】21