Results 51 to 60 of about 140 (131)

Projective bitopological spaces II. [PDF]

Journal of the Australian Mathematical Society, 1972
Gleason [3] proved that in the category G of compact Hausdorff spaces and continuous maps, the projective objects are precisely the extremally disconnected spaces contained in the category. Strauss [7] generalised this and proved that in the category G of regular Hausdorif spaces and perfect maps the projective objects are again precisely the ...
openaire   +2 more sources

On Quasimetrizability of Quasicone Metric Spaces

Chinese Journal of Mathematics, Volume 2015, Issue 1, 2015., 2015
The aim of this work is to extend interesting results on the metrizability of cone metric spaces as it appears in the literature. In this paper we appeal to quasiuniformities and uniformities to prove that a quasicone metric space is qausimetrizable, and from our results we will deduce that every cone metric space is metrizable; our approach is more on
M. Aphane, S. P. Moshokoa, Salvatore A. Marano   +2 more
wiley   +1 more source

On Separation Axioms in an Ordered Neutrosophic Bitopological Space [PDF]

Neutrosophic Sets and Systems, 2017
In this paper we introduce the concept of a new class of an ordered neutrosophic bitopological spaces. Besides giving some interesting properties of these spaces.
R. Narmada Devi, R. Dhavaseelan, S. Jafari   +2 more
doaj   +1 more source

Some Properties of (1,  2)*‐Locally Closed Sets

International Journal of Analysis, Volume 2014, Issue 1, 2014., 2014
A new kind of generalization of (1, 2)*‐closed set, namely, (1, 2)*‐locally closed set, is introduced and using (1, 2)*‐locally closed sets we study the concept of (1, 2)*‐LC‐continuity in bitopological space. Also we study (1, 2)*‐contracontinuity and lastly investigate its relationship with (1, 2)*‐LC‐continuity.
Baby Bhattacharya, Arnab Paul, Sudip Debnath, Rodica D. Costin   +3 more
wiley   +1 more source

Nano Fuzzy Bitopological Spaces

Ratio Mathematica
The object of this paper is to introduce the concept of Nano fuzzy bitopological space with respect to the fuzzy subsets of the universe which is defined in terms of Nano fuzzy lower and Nano fuzzy upper approximations of  fuzzy subsets respectively ...
Purva Rajwade, Rachna Navalakhe
doaj   +1 more source

On T0 fuzzy Bitopological spaces

Journal of Bangladesh Academy of Sciences, 2014
In this paper, the authors introduced two notions of fuzzy pairwise-T0 bitopological spaces and compared them with other such concepts. The authors also studied some other properties of these spaces. DOI: http://dx.doi.org/10.3329/jbas.v38i2.21345 Journal of Bangladesh Academy of Sciences, Vol. 38, No.
Amin, M. R., Ali, D. M., Hossain, M. S.
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$ KC $-bitopological spaces

AIMS Mathematics
<p>A topological space $ \left(X, \tau \right) $ is called a $ KC $-space when every compact subset of $ X $ is closed. The aim of this paper is to introduce new, namely $ KC $-bitopological spaces and pairwise $ KC $-topological spaces "$ P $-$ KC $-topological spaces".
Hamza Qoqazeh, Ali Atoom, Maryam Alholi, Eman ALmuhur, Eman Hussein, Anas Owledat, Abeer Al-Nana   +6 more
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On ℳ𝒜(i,j)‐Continuous Functions in Biminimal Structure Spaces

International Journal of Mathematics and Mathematical Sciences, Volume 2013, Issue 1, 2013., 2013
We introduce the notion of ℳ𝒜(i,j)‐continuous functions and some other forms of continuity in biminimal structure spaces. Some new characterizations and several fundamental properties of ℳ𝒜(i,j)‐continuous functions are obtained.
Chawalit Boonpok, Chokchai Viriyapong, Montri Thongmoon, Nongluk Viriyapong, Luc Vrancken   +4 more
wiley   +1 more source

Pairwise locally compact and compactification in

Journal 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

Applied 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