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AB-COMPACTA ´ JUHASZ ´ ISAAC GORELIC AND ISTVAN Abstract. We define a compactum X to be AB-compact if the cofinality of the character χ(x, Y ) is countable whenever x ∈ Y
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Document Date: 2010-08-29 05:46:50
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ISAAC GORELIC /
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Ordinal numbers
Cardinal numbers
Order theory
Topological spaces
Separable space
First-countable space
Cofinality
Constructible universe
Compact space
Topology
AB-COMPACTA ´ JUHASZ ´ ISAAC GORELIC AND ISTVAN Abstract. We define a compactum X to be AB-compact if the cofinality of the character χ(x, Y ) is countable whenever x ∈ Y