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More on Selective Covering Properties in Bitopological Spaces [PDF]

open access: goldJournal of Mathematics, 2021
In this study, we continue our investigation of selective covering properties in bitopological spaces. We discuss their behaviour under certain kinds of mappings.
Ljubiša D. R. Kočinac, Selma Özçağ
doaj   +2 more sources

Covering properties for LQ𝒰s with nested bases [PDF]

open access: goldInternational Journal of Mathematics and Mathematical Sciences, 2001
This paper deals with problems on LQ𝒰 spaces which have a nested base; among others we give conditions so that a space (X,τ1,τ2) admits an LQ𝒰𝒰 which generates τ1 and 𝒰−1τ2, and give necessary and sufficient conditions for a space to be quasi-metrizable,
A. Andrikopoulos, J. N. Stabakis
doaj   +2 more sources

Covering properties in neutrosophic topological spaces [PDF]

open access: greenNeutrosophic Sets and Systems, 2022
Single-valued neutrosophic set is being extensively used in solving real-life problems. Recently neutrosophic topological space was developed based on redefined single-valued neutrosophic set operations. The purpose of this article is to investigate some
Sudeep Dey, Gautam Chandra Ray
doaj   +2 more sources

Star covering properties and neighborhood assignments

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2023
Summary: Following the idea of \textit{J. van Mill} et al. [Topology Appl. 154, No. 10, 2127--2134 (2007; Zbl 1131.54022)], we define a space \(X\) to be neighborhood assignment \(\mathscr{P}\) (briefly NA-\(\mathscr{P}\), where \(\mathscr{P}\) is a class of topological spaces) if for any neighbourhood assignment \(\{O_x : x \in X\}\) there is a ...
Fortunata Aurora Basile   +3 more
doaj   +4 more sources

Small Coverings with Smooth Functions under the Covering Property Axiom [PDF]

open access: bronzeCanadian Journal of Mathematics, 2005
AbstractIn the paper we formulate a Covering Property Axiom, CPAprism, which holds in the iterated perfect set model, and show that it implies the following facts, of which (a) and (b) are the generalizations of results of J. Steprāns.(a) There exists a family ℱ of less than continuummany functions from ℝ to ℝ such that ℝ2 is covered by functions from
Krzysztof Ciesielski, Janusz Pawlikowski
openalex   +3 more sources

Effect of Colloid Water Thickness on Microstructures and Mechanical Properties of Titanium/Steel Interfaces Prepared by Explosive Welding [PDF]

open access: yesArchives of Metallurgy and Materials, 2023
Using colloid water as a covering for explosives can improve the energy efficiency for explosive welding, while its effects on bonding properties remain unclear.
Fei Wang, Ming Yang
doaj   +1 more source

On Fuzzy C-Paracompact Topological Spaces

open access: yesMathematics, 2022
The aim of this paper is to study fuzzy extensions of some covering properties defined by A. V. Arhangel’skii and studied by other authors. Indeed, in 2016, A. V.
Francisco Gallego Lupiáñez
doaj   +1 more source

Single-Valued Neutrosophic Covering-Based Rough Set Model Over Two Universes and Its Application in MCDM [PDF]

open access: yesNeutrosophic Sets and Systems, 2023
This article aims to propose a new type of single-valued neutrosophic(SVN) covering-based rough sets over two universes by using Wang’s single-valued neutrosophic covering rough sets.
Somen Debnath
doaj   +1 more source

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   +1 more source

Sustainable Greenhouse Covering Materials with Nano- and Micro-Particle Additives for Enhanced Radiometric and Thermal Properties and Performance

open access: yesAgriEngineering, 2023
This review aims to provide a comprehensive overview of nano- and microscopic materials that can provide thermal radiation insulation without reducing visible light transmittance, thereby reducing heat loss and conserving energy in greenhouses.
Chrysanthos Maraveas   +3 more
doaj   +1 more source

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