Results 1 to 10 of about 464 (130)

Weaker forms of the Menger property

open access: yesQuaestiones Mathematicae, 2012
In this paper we study a weaker form of the classical concept of Menger property.  This property, called weakly Menger, is independent from the Menger property and the almost Menger property. In particular, for Tychonoff spaces weaker  Menger spaces are not equivalent to almost Menger spaces. We give some characterizations in terms of regular
Bruno Antonio Pansera
exaly   +5 more sources

Weak infinite-dimensionality in Cartesian products with the Menger Property

open access: yesTopology and Its Applications, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Roman Pol
exaly   +3 more sources

Some remarks on the projective properties of Menger and Hurewicz

open access: yesQuaestiones Mathematicae
It is known that both the Menger and Hurewicz property of a Tychonoff space $X$ can be described by the way $X$ is placed in its Čech-Stone compactification $βX$. We provide analogous characterizations for the projective versions of the properties of Menger and Hurewicz.
Mikołaj Krupski
exaly   +4 more sources

On the Menger and almost Menger properties in locales

open access: yesApplied General Topology, 2021
<p>The Menger and the almost Menger properties are extended to locales. Regarding the former, the extension is conservative (meaning that a space is Menger if and only if it is Menger as a locale), and the latter is conservative for sober T<sub>D</sub>-spaces.
Tilahun Bayih   +2 more
openaire   +6 more sources

On localization of the Menger property

open access: yesQuaestiones Mathematicae, 2022
In this paper we introduce and study the local version of the Menger property, namely locally Menger property (or, locally Menger space). We explore some preservation like properties in this space. We also discuss certain situations where this local property behaves somewhat differently from the classical Menger property.
Nur Alam, Debraj Chandra
openaire   +3 more sources

Menger's covering property and groupwise density [PDF]

open access: yesJournal of Symbolic Logic, 2006
AbstractWe establish a surprising connection between Menger's classical covering property and Blass-Laflamme's modern combinatorial notion of groupwise density. This connection implies a short proof of the groupwise density bound on the additivity number for Menger's property.
Boaz Tsaban, Lyubomyr Zdomskyy
openaire   +3 more sources

On the Menger covering property and $D$-spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 2012
7 pages, to appear in Proc. Amer.
Repovs, Dusan, Zdomskyy, Lyubomyr
openaire   +3 more sources

A Menger-like property of tree-cut width

open access: yesJournal of Combinatorial Theory, Series B, 2021
In 1990, Thomas proved that every graph admits a tree decomposition of minimum width that additionally satisfies a certain vertex-connectivity condition called leanness [A Menger-like property of tree-width: The finite case. Journal of Combinatorial Theory, Series B, 48(1):67-76, 1990].
Giannopoulou, Archontia   +3 more
openaire   +6 more sources

On some properties of Hurewicz, Menger, and Rothberger [PDF]

open access: yesFundamenta Mathematicae, 1988
A metric space X has property C iff for every sequence \(\{\epsilon_ n ...
Miller, Arnold W., Fremlin, David H.
openaire   +1 more source

Home - About - Disclaimer - Privacy