A note on nowhere dense sets in $\omega ^\ast $

Petr Simon

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A note on almost disjoint refinement

Petr Simon (1996)

Acta Universitatis Carolinae. Mathematica et Physica

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Almost disjoint families and property (a)

Paul Szeptycki, Jerry Vaughan (1998)

Fundamenta Mathematicae

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We consider the question: when does a Ψ-space satisfy property (a)? We show that if $| A | < p$ then the Ψ-space Ψ(A) satisfies property (a), but in some Cohen models the negation of CH holds and every uncountable Ψ-space fails to satisfy property (a). We also show that in a model of Fleissner and Miller there exists a Ψ-space of cardinality $p$ which has property (a). We extend a theorem of Matveev relating the existence of certain closed discrete subsets with the failure of property (a). ...

On compositions and products of almost continuous functions

Tomasz Natkaniec (1991)

Fundamenta Mathematicae

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Absolute points in $β N ∖ N$

Anna Kucia, Andrzej Szymański (1976)

Czechoslovak Mathematical Journal

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Displaying similar documents to “A note on nowhere dense sets in ω * ”

A note on almost disjoint refinement

Almost disjoint families and property (a)

On compositions and products of almost continuous functions

Absolute points in β N ∖ N

Displaying similar documents to “A note on nowhere dense sets in $ω^{*}$ ”

Absolute points in $β N ∖ N$