The class of -spaces is invariant of closed mappings with Lindelöf fibres
Shu Hao Sun (1988)
Commentationes Mathematicae Universitatis Carolinae
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Displaying similar documents to “A note on subparacompact spaces.”
The class of -spaces is invariant of closed mappings with Lindelöf fibres
On covering properties by regular closed sets.
Janković, Dragan, Konstadilaki, Chariklia (1996)
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-Lindelöf spaces.
Al-Zoubi, Khalid, Al-Nashef, Bassam (2004)
International Journal of Mathematics and Mathematical Sciences
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Closure-preserving covers
Rastislav Telgársky (1974)
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Extending point-finite covers
Sennott, L. I.
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Henry Potoczny (1972)
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The sup = max problem for the extent of generalized metric spaces
Yasushi Hirata, Yukinobu Yajima (2013)
Commentationes Mathematicae Universitatis Carolinae
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It looks not useful to study the sup = max problem for extent, because there are simple examples refuting the condition. On the other hand, the sup = max problem for Lindelöf degree does not occur at a glance, because Lindelöf degree is usually defined by not supremum but minimum. Nevertheless, in this paper, we discuss the sup = max problem for the extent of generalized metric spaces by combining the sup = max problem for the Lindelöf degree of these spaces.