On spaces with point-countable $k$-systems
Commentationes Mathematicae Universitatis Carolinae, Tome 45 (2004) no. 4, pp. 749-765
This paper deals with the behavior of $M$-spaces, countably bi-quasi-$k$-spaces and singly bi-quasi-$k$-spaces with point-countable $k$-systems. For example, we show that every $M$-space with a point-countable $k$-system is locally compact paracompact, and every separable singly bi-quasi-$k$-space with a point-countable $k$-system has a countable $k$-system. Also, we consider equivalent relations among spaces entried in Table 1 in Michael's paper [15] when the spaces have point-countable $k$-systems.
This paper deals with the behavior of $M$-spaces, countably bi-quasi-$k$-spaces and singly bi-quasi-$k$-spaces with point-countable $k$-systems. For example, we show that every $M$-space with a point-countable $k$-system is locally compact paracompact, and every separable singly bi-quasi-$k$-space with a point-countable $k$-system has a countable $k$-system. Also, we consider equivalent relations among spaces entried in Table 1 in Michael's paper [15] when the spaces have point-countable $k$-systems.
Classification :
54D55, 54E18, 54E35
Keywords: countably-bi-quasi-$k$-space; point-countable $k$-system; local compactness; \newline metrizability
Keywords: countably-bi-quasi-$k$-space; point-countable $k$-system; local compactness; \newline metrizability
@article{CMUC_2004_45_4_a15,
author = {Yoshioka, Iwao},
title = {On spaces with point-countable $k$-systems},
journal = {Commentationes Mathematicae Universitatis Carolinae},
pages = {749--765},
year = {2004},
volume = {45},
number = {4},
mrnumber = {2103090},
zbl = {1099.54025},
language = {en},
url = {http://geodesic.mathdoc.fr/item/CMUC_2004_45_4_a15/}
}
Yoshioka, Iwao. On spaces with point-countable $k$-systems. Commentationes Mathematicae Universitatis Carolinae, Tome 45 (2004) no. 4, pp. 749-765. http://geodesic.mathdoc.fr/item/CMUC_2004_45_4_a15/