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countably B-subcompact

Last-modified: 2010-09-29 (水) 13:37:45

Definition Edit

B is an open base of a topological space X.
X is called countably B-subcompact for every countable subfamily F of B, if F is a regular filter base then F has a non-empty intersection.

Remark Edit

Reference Edit

  • Y. Ikeda, Cech-compaleteness and countably subcompactness, Topology Proc. Vol.14, pp.75-87 (1989).