Results 41 to 50 of about 141 (131)

On extension of pairwise θ-continuous maps

International Journal of Mathematics and Mathematical Sciences, 1996
The aim of the paper is to find suitable conditions so as to ultimately establish the existence and uniqueness of the extension of a pairwise θ-continuous map onto an arbitrary extension-space of a bitopological space.
S. K. Sen, M. N. Mukherjee
doaj   +1 more source

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

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 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

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.
openaire   +3 more sources

Bi*-topological space

NTU Journal of Pure Sciences
Bi-topological spaces provide a general framework for studying mathematical structures endowed with two distinct topologies, enabling the investigation of concepts that cannot be fully characterized in classical topology.
Fadhil Hussein Abbas, Israa Raad Faisal
doaj   +1 more source

$ 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

Lattice‐Valued Topological Systems as a Framework for Lattice‐Valued Formal Concept Analysis

Journal of Mathematics, Volume 2013, Issue 1, 2013., 2013
Recently, Denniston, Melton, and Rodabaugh presented a new categorical outlook on a certain lattice‐valued extension of Formal Concept Analysis (FCA) of Ganter and Wille; their outlook was based on the notion of lattice‐valued interchange system and a category of Galois connections. This paper extends the approach of Denniston et al.
Sergey A. Solovyov, Alfred Peris
wiley   +1 more source