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The Menger and Projective Menger Properties of Function Spaces With the Set-Open Topology [PDF]

open access: yesMathematica Slovaca, 2019
Abstract For a Tychonoff space X and a family λ of subsets of X, we denote by C λ(X) the space of all real-valued continuous functions on X with the set-open topology. A Menger space is a topological space in which for every sequence of open covers 𝓤1, 𝓤2, … of the space there are finite sets 𝓕1 ⊂ 𝓤1, 𝓕2 ⊂
Aleksandr Vladimirovich Osipov
exaly   +6 more sources
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On Set Star-Menger Spaces

Quaestiones Mathematicae, 2023
In this paper, we prove that the product of a set star-Menger space with a compact space is a rectangular set star-Menger. We also  provide an example of Tychonoff pesudocompact set star-Menger space which is not set strongly starMenger. The above mentioned  results answer two questions of [14].
Sumit Singh
exaly   +3 more sources

On Probabilistic φ-Contractions in Menger Spaces [PDF]

open access: yesFuzzy Sets and Systems, 2017
Valentín Gregori and Samuel Morillas acknowledge the support of Ministry of Economy and Competitiveness of Spain under Grant MTM2015-64373-P.
Samuel Morillas   +2 more
exaly   +5 more sources

A New Contraction Principle in Menger Spaces

Acta Mathematica Sinica, English Series, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Binayak S Choudhury
exaly   +3 more sources

On star-C-Menger spaces

Quaestiones Mathematicae, 2014
A space X is star-C-Menger if for each sequence (Un : n ∈ N) of open covers of X there exists a sequence (Ksub>n : n ∈ N) of countably compact subsets of X such that {St(Kn; Un) : n ∈ N} is an open cover of X. In this paper, we investigate the relationship between star-C-Menger spaces and related spaces, and study topological properties of star-< ...
Song, Yan-Kui, Yin, Zheng
openaire   +2 more sources

On set-star-K-Menger spaces

Publicationes Mathematicae Debrecen, 2022
Motivated by the Arhangel’skii [2] “s-Lindel¨of cardinal function” and Koˇcinac, Konca, and Singh [15] set-star covering properties, we introduce the setstar-C-Menger property. A space X is said to have the set-star-C-Menger property if for each nonempty subset A of X and each sequence (Un : n ∈ N) of families of open subsets of X such that A ⊂ ∪Un for
openaire   +2 more sources

A note on probabilistic φ-contractions in Menger spaces

Fuzzy Sets and Systems, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dingwei Zheng, Xin-he Liu, Pei Wang
openaire   +1 more source

Weaker Forms of the Menger Property in Bitopological Spaces

open access: yesQuaestiones Mathematicae, 2018
In this paper we continue previous investigations on the weaker forms of the Menger property in bitopological spaces. We introduce weakly Menger property and study some topological properties of almost and weakly Menger bitopological spaces.
Eysen, A. Erme, Ozcag, Selma
exaly   +1 more source

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