Geodesic
On relatively almost countably compact subsets
Mathematica Bohemica, Tome 135 (2010) no. 3, pp. 291-297.

Voir la notice de l'article provenant de la source Czech Digital Mathematics Library

A subset $Y$ of a space $X$ is almost countably compact in $X$ if for every countable cover $\Cal U$ of $Y$ by open subsets of $X$, there exists a finite subfamily $\Cal V$ of $\Cal U$ such that $Y\subseteq \overline {\bigcup \Cal V}$. In this paper we investigate the relationship between almost countably compact spaces and relatively almost countably compact subsets, and also study various properties of relatively almost countably compact subsets.
DOI : 10.21136/MB.2010.140705
Classification : 54D15, 54D20
Keywords: countably compact space; almost countably compact space; relatively almost countably compact subset 
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Song, Yan-Kui; Zheng, Shu-Nian. On relatively almost countably compact subsets. Mathematica Bohemica, Tome 135 (2010) no. 3, pp. 291-297. doi : 10.21136/MB.2010.140705. http://geodesic.mathdoc.fr/articles/10.21136/MB.2010.140705/

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