The Baire property in remainders of topological groups and other results
Commentationes Mathematicae Universitatis Carolinae, Tome 50 (2009) no. 2, pp. 273-279
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It is established that a remainder of a non-locally compact topological group $G$ has the Baire property if and only if the space $G$ is not Čech-complete. We also show that if $G$ is a non-locally compact topological group of countable tightness, then either $G$ is submetrizable, or $G$ is the Čech-Stone remainder of an arbitrary remainder $Y$ of $G$. It follows that if $G$ and $H$ are non-submetrizable topological groups of countable tightness such that some remainders of $G$ and $H$ are homeomorphic, then the spaces $G$ and $H$ are homeomorphic. Some other corollaries and related results are presented.
Classification :
54B05, 54H11, 54H15
Keywords: Baire property; $\sigma $-compact; Čech-complete space; compactification; Čech-Stone compactification; Rajkov complete; paracompact $p$-space
Keywords: Baire property; $\sigma $-compact; Čech-complete space; compactification; Čech-Stone compactification; Rajkov complete; paracompact $p$-space
@article{CMUC_2009__50_2_a7,
author = {Arhangel'skii, Alexander},
title = {The {Baire} property in remainders of topological groups and other results},
journal = {Commentationes Mathematicae Universitatis Carolinae},
pages = {273--279},
publisher = {mathdoc},
volume = {50},
number = {2},
year = {2009},
mrnumber = {2537836},
zbl = {1212.54098},
language = {en},
url = {http://geodesic.mathdoc.fr/item/CMUC_2009__50_2_a7/}
}
TY - JOUR AU - Arhangel'skii, Alexander TI - The Baire property in remainders of topological groups and other results JO - Commentationes Mathematicae Universitatis Carolinae PY - 2009 SP - 273 EP - 279 VL - 50 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_2009__50_2_a7/ LA - en ID - CMUC_2009__50_2_a7 ER -
%0 Journal Article %A Arhangel'skii, Alexander %T The Baire property in remainders of topological groups and other results %J Commentationes Mathematicae Universitatis Carolinae %D 2009 %P 273-279 %V 50 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_2009__50_2_a7/ %G en %F CMUC_2009__50_2_a7
Arhangel'skii, Alexander. The Baire property in remainders of topological groups and other results. Commentationes Mathematicae Universitatis Carolinae, Tome 50 (2009) no. 2, pp. 273-279. http://geodesic.mathdoc.fr/item/CMUC_2009__50_2_a7/