Remainders of locally ƒ\v{C}ech-complete spaces and homogeneity

Year 2017, Volume: 46 Issue: 1, 1 - 8, 01.02.2017

A.v. Arhangel'skii

Abstract

We study remainders of locally ƒƒ\v{C}ech-complete spaces. In particular, it is established that if $X$ is a locally ƒ\v{C}ƒech-complete non-ƒ\v{C}ƒech-complete space, then no remainder of $X$ is homogeneous (Theorem 3.1). We also show that if $Y$ is a remainder of a locally ƒƒ\v{C}ech-complete space $X$, and every $y\in Y$ is a $G_\delta$-point in $Y$, then the cardinality of $Y$ doesn't exceed $2^\omega$. Several other results are obtained.

Keywords

Remainder , Compactification , $G_\delta$-point , Homogeneous , Point-countable base , Lindel\"{o}f $\Sigma$-space , Charming space , Countable type , \v{C}ech-complete

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