Results 51 to 60 of about 141 (131)

Pairwise locally compact and compactification in

open access: yesJournal of Kufa for Mathematics and Computer, 2019
The concept of intuitionistic topological space was introduced by Çoker. The aim of this paper is to generalize notions between bitopological spaces and double topological spaces and also give a notion of pairwise locally compact and compactification ...
Rewayda Mohsin
doaj   +1 more source

Selection principles and covering properties in bitopological spaces

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   +1 more source

A Note on Some Generalized Closed Sets in Bitopological Spaces Associated to Digraphs

open access: yesJournal of Applied Mathematics, Volume 2012, Issue 1, 2012., 2012
Many investigations are undergoing of the relationship between topological spaces and graph theory. The aim of this short communication is to study the nature and properties of some generalized closed sets in the bitopological spaces associated to the digraph.
K. Kannan, Livija Cveticanin
wiley   +1 more source

Fell type topologies of quasi-pseudo-metric spaces and the Kuratowski-Painlevé convergence

open access: yesApplied General Topology, 2001
We study the double Fell topology when this hypertopology is constructed over a quasi-pseudo-metric space. In particular, its relationship with the Wijsman hypertopology is studied.
Jesús Rodríguez-López
doaj   +1 more source

Pairwise Compact In Intuitionistic Double Topological Spaces

open access: yesJournal of Kufa for Mathematics and Computer, 2011
The concept of intuitionistic topological space was introduced by Çoker .The aim of this paper is to discuss the relation between  bitopological spaces and double- topological spaces and give a notion of pairwise compact for double topological spaces .
Hadi J Mustafa   +2 more
doaj   +1 more source

Properties of Separation Axioms in Bitopological Spaces

open access: yesJournal of Bangladesh Academy of Sciences, 2020
In this paper, three notions of separation axioms in bitopological space are discussed. Some relations of topology and bitopology in such notions have been found. Further, that these notions are hereditary and topological property are proved. Journal of Bangladesh Academy of Sciences, Vol. 43, No.
Roshmi, Rupaya, Hossain, M. S.
openaire   +2 more sources

SOME REPRESENTATIONS CONNECTED WITH ULTRAFILTERS AND MAXIMAL LINKED SYSTEMS

open access: yesUral Mathematical Journal, 2017
Ultrafilters and maximal linked systems (MLS)  of a lattice of sets are considered. Two following variants of topological equipment are investigated: the Stone and Wallman topologies.
Alexander G. Chentsov
doaj   +1 more source

Characterizations of Quasi-Metrizable Bitopological Spaces [PDF]

open access: yesJournal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1988
AbstractIn this paper we prove that a pairwise Hausdorff bitopological space is quasi-metrizable if and only if for each point x ∈ X and for i, j = 1,2, i ≠ j, one can assign nbd bases { S(n, i; x) | n = 1, 2,… } such that (i) y ∉ S (n − 1, i; x) imples S(n, i; x) ∩ S (n, j; y) = φ, (ii) y ∈ S (n, i; x) implies S (n, i; y) ⊂ S(n − 1, i; x). We derive
Raghavan, T. G., Reilly, I. L.
openaire   +2 more sources

Projective bitopological spaces [PDF]

open access: yesJournal of the Australian Mathematical Society, 1972
J. C. Kelly [2] introduced the concept of a bitopological space. Lane [3], Patty [4] and Pervin [5] have continued his work. Our purpose in this paper is to identify the projective objects in a suitable category of bitopological spaces after the manner of Gleason [1] and generalize his theorem that in the category of compact Hausdoriff topological ...
openaire   +1 more source

Generalized Quasi-Continuities of Multifunctions on Bitopological Spaces

open access: yesMathematics
The aim of the article is to introduce a few variants of the generalized quasi-continuity of multifunctions defined on a bitopological space and to study their mutual relationship.
Milan Matejdes
doaj   +1 more source

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