Results 1 to 10 of about 51 (51)
A variation of the class of statistical γ covers
Topological Algebra and its Applications, 2023 In this article, we introduce s-s-γ\gamma cover using the notion of star operator, which is an extension of the previous results on s-γ\gamma covers.
Bal Prasenjit, Rakshit Debjani
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On some spaces via topological ideals
Open Mathematics, 2023 Our main purpose is to introduce and investigate the concepts of some forms of spaces via topological ideals. Some characterizations of some forms of spaces via topological ideals are established.
Boonpok Chawalit
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More on μ-semi-Lindelöf sets in μ-spaces
Demonstratio Mathematica, 2021 Sarsak [On μ\mu -compact sets in μ\mu -spaces, Questions Answers Gen. Topology 31 (2013), no. 1, 49–57] introduced and studied the class of μ\mu -Lindelöf sets in μ\mu -spaces. Mustafa [μ\mu -semi compactness and
Sarsak Mohammad S.
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Compact mappings and s-mappings at subsets
Open Mathematics, 2022 Almost ss-mappings and almost compact mappings have been introduced and studied. In this article, we continue to research some questions related to the almost s-images (resp., almost compact images) of metric spaces.
Lin Shou, Ling Xuewei, He Wei
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Semi-Hurewicz-Type properties in ditopological texture spaces
Open Mathematics, 2018 In this paper we will define and discuss semi-Hurewicz type covering properties in ditopological texture spaces. We consider the behaviour of semi-Hurewicz and co-semi-Hurewicz selection properties under direlation and difunction between ditopological ...
Ullah Hafiz, Khan Moiz ud Din
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Open Mathematics, 2019 In this paper we define and investigate nearly Hurewicz spaces and their star version. It is shown that a nearly Hurewicz space fits between Hurewicz and almost Hurewicz spaces.
Aqsa, Khan Moiz ud Din
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On almost star σ-compact spaces
, 2021 A space X is almost star σ-compact (weakly star σ-compact) if for eachopen cover U of X, there exists a σ-compact subset F of X such that. In this paper, we investigate the relationships amongstar σ-compact spaces, almost star σ-compact spaces and weakly
Xuan, Wei-Feng, Song, Yan-Kui
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Selections, Paracompactness and Compactness [PDF]
, 2010 2000 Mathematics Subject Classification: 54C60, 54C65, 54D20, 54D30.In the present paper the Lindelöf number and the degree of compactness of spaces and of the cozero-dimensional kernel of paracompact spaces are characterized in terms of selections of ...
Mihaylova, Ekaterina P. +2 more
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On star Rothberger spaces modulo an ideal
Applied General TopologyIn this article, we introduce the ideal star-Rothberger property by coupling the notion of a star operator to that of an ideal Rothberger space, after which some of its topological characteristics are analysed. By creating relationships between a numbers
Susmita Sarkar +2 more
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Revisiting di-uniformity and full-dinormality via dicovers
, 2021 In this paper, we dene and study the notions of normal* and w-anchored dicovers as important classes of covers, convenient for the texture theory.
Yildiz, Filiz, Özçağ, Selma
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