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Absolutely strongly star-Hurewicz spaces

open access: yesOpen Mathematics, 2015
A space X is absolutely strongly star-Hurewicz if for each sequence (Un :n ∈ℕ/ of open covers of X and each dense subset D of X, there exists a sequence (Fn :n ∈ℕ/ of finite subsets of D such that for each x ∈X, x ∈St(Fn; Un) for all but finitely many n.
Yan-Kui Song
exaly   +4 more sources

Some properties defined by relative versions of star-covering properties II

open access: yesApplied General Topology, 2023
In this paper we consider some recent relative versions of Menger property called set strongly star Menger and set star Menger properties and the corresponding Hurewicz-type properties. In particular, using [2], we "easily" prove that the set strong star
Maddalena Bonanzinga   +2 more
doaj   +3 more sources

Selection principles and covering properties in bitopological spaces [PDF]

open access: yesApplied General Topology, 2020
Our main focus in this paper is to introduce and study various selection principles in bitopological spaces. In particular, Menger type, and Hurewicz type covering properties like: Almost p-Menger, star p-Menger, strongly star p-Menger, weakly p-Hurewicz,
Moiz ud Din Khan, Amani Sabah
doaj   +2 more sources

The Absolutely Strongly Star-Hurewicz Property with Respect to an Ideal

open access: yesTatra Mountains Mathematical Publications, 2020
Abstract Aspace X is said to have the absolutely strongly star -𝒤-Hurewicz (ASS𝒤H) property if for each sequence (𝒰 n : n ∈ 𝕅)of opencovers of
Sumit Singh, Manoj Bhardwaj
exaly   +2 more sources

Remarks on strongly star-Hurewicz spaces

open access: yesFilomat, 2013
A space X is strongly star-Hurewicz if for each sequence (Un : n ∈ N) of open covers of X there exists a sequence (An : n ∈ N) of finite subsets of X such that for each x ∈ X, x ∈ St(An; Un) for all but finitely many n. In this paper, we continue to investigate topological properties of strongly star-Hurewicz spaces.
Yan-Kui Song, Song Yan-Kui
exaly   +3 more sources

Some remarks on Pixley-Roy hyperspaces

open access: yesTạp chí Khoa học Đại học Huế: Khoa học Tự nhiên
In this paper, we study cellular-compact, cellular-Lindel\"of, strongly star-Hurewicz, strongly star-Rothberger, strongly star-Menger spaces on hyperspaces with the Pixley-Roy topology.
Quoc Tuyen Luong   +2 more
doaj   +3 more sources

On nearly Hurewicz spaces

open access: yesOpen 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
exaly   +2 more sources

Strongly countable dimensional compacta form the Hurewicz set

open access: yesTopology and Its Applications, 2007
The hyperspaces of strongly countable dimensional compacta of positive dimension and of strongly countable dimensional continua of dimension greater than 1 in the Hilbert cube are homeomorphic to the Hurewicz set of all nonempty countable closed subsets ...
Paweł Krupski, Alicja Samulewicz
exaly   +2 more sources

Variations of some star selection properties [PDF]

open access: yes, 2021
4th International Conference of Mathematical Sciences (ICMS) -- JUN 17-21, 2020 -- Maltepe Univ, ELECTR NETWORKIn this paper we introduce some new types of star covering properties which we call set (strongly) star Menger, set (strongly) star Rothberger,
Şükran Konca   +5 more
core   +1 more source

Set star-menger and set strongly star-menger spaces [PDF]

open access: yes, 2022
Motivated by the Arhangel'skii s-Lindelof cardinal function definition, Kocinac and Konca defined and studied set covering properties and set star covering properties.
Konca, Şükran   +2 more
core   +1 more source

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