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

Yıl 2017, Cilt: 46 Sayı: 1, 1 - 8, 01.02.2017

A.v. Arhangel'skii

Öz

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.

Anahtar Kelimeler

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

Kaynakça

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