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Encyclopedia of Compactness Wiki*
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CB-compact をテンプレートにして作成
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開始行:
*Definition [#f0c1a71c]
A topological space X is called CB-compact (or [[compact-boundary compact]]) iff every cover of X by open subsets with compact boundaries has a finite subcover.
*Remark [#i3b4331e]
-If every cover of X by open subsets with compact boundaries has a countable subcover, X is called CB-Lindeloef.
*Reference [#jcbc1948]
A. Sondore, ''On CB-compact, countably CB-compact and CB-Lindeloef spaces'', Matematicki Vesnik 50 (1998) 125-133.
終了行:
*Definition [#f0c1a71c]
A topological space X is called CB-compact (or [[compact-boundary compact]]) iff every cover of X by open subsets with compact boundaries has a finite subcover.
*Remark [#i3b4331e]
-If every cover of X by open subsets with compact boundaries has a countable subcover, X is called CB-Lindeloef.
*Reference [#jcbc1948]
A. Sondore, ''On CB-compact, countably CB-compact and CB-Lindeloef spaces'', Matematicki Vesnik 50 (1998) 125-133.
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