关于Katuta-Junnila问题的注记
A Note of Katuta-Junnila's Problem
摘要
设空间X是σ-ortho-紧的且X的每一定向开复盖有σ-垫状加细,则X是次亚紧的,部分地回答了Katuta-Junnila问题.
It is proved that a space X is submetacompact if it is σorthocompact and each directed open cover has σcushioned refinement. KatutaJunnila's question has been partially answered.
出处
《长沙电力学院学报（自然科学版）》
2003年第1期4-6,共3页
JOurnal of Changsha University of electric Power:Natural Science
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