Results 21 to 30 of about 6,310,275 (287)

Characterizations of some near-continuous functions and near-open functions [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1986
A subset N of a topological space is defined to be a θ-neighborhood of x if there exists an open set U such that x∈U⫅C1   U⫅N. This concept is used to characterize the following types of functions: weakly continuous, θ-continuous, strongly θ-continuous ...
C. W. Baker
doaj   +2 more sources

On the fractional Fourier and continuous fractional wave packet transforms of almost periodic functions

open access: yesJournal of Inequalities and Applications, 2017
We state the fractional Fourier transform and the continuous fractional wave packet transform as ways for analyzing persistent signals such as almost periodic functions and strong limit power signals. We construct frame decompositions for almost periodic
Banu Ünalmış Uzun
doaj   +2 more sources

Contra-ω-Continuous and Almost Contra-ω-Continuous

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2007
The notion of contra continuous functions was introduced and investigated by Dontchev. In this paper, we apply the notion of ω-open sets in topological space to present and study a new class of called almost contra ω-continuous functions as a new ...
Ahmad Al-Omari, Mohd Salmi Md Noorani
doaj   +2 more sources

An almost continuous function [PDF]

open access: yesProceedings of the American Mathematical Society, 1974
In this note, a function is constructed which is of the Cesàro type and is almost continuous in the sense of Stallings and in the sense of Husain.
openaire   +1 more source

On Almost contra T*-continuous functions

open access: yesJournal of Kufa for Mathematics and Computer, 2012
Using the concept of  T*-open set, we introduce and study Almost contra –T* -continuous functions Several properties and characterizations of these function are given.
Hadi Jaber Mustafa   +2 more
doaj   +1 more source

Structure of Fourier exponents of almost periodic functions and periodicity of almost periodic functions [PDF]

open access: yes, 1996
summary:The paper deals with almost periodic functions which are limits of sequences of continuous periodic functions, and determines the structure of their Fourier exponents and their ranges.
Fischer, Alexandr
core   +1 more source

Almost γ-continuous functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1992
In this paper, a new class of functions called “almost γ-continuous” is introduced and their several properties are investigated. This new class is also utilized to improve some published results concerning weak continuity [6] and γ-continuity [2].
F. Cammaroto, T. Noiri
doaj   +1 more source

On almost-N-continuous functions [PDF]

open access: yesJournal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1995
AbstractRecently the class of almost-N-continuous functions between topological spaces has been defined. This paper continues the study of such functions, especially from the point of view of changing the topology on the codomain.
Konstadilaki-Savvopoulou, Ch.   +1 more
openaire   +2 more sources

ON ALMOST WEAKLY CONTINUOUS FUNCTIONS

open access: yesDemonstratio Mathematica, 1998
Let \((X,\tau)\) and \((Y,\sigma)\) be two topological spaces. A mapping \(f:X\to Y\) is said to be almost weakly continuous [\textit{D. S. Janković}, Int. J. Math. Math. Sci. 8, 615-619 (1985; Zbl 0577.54012)] or quasi-precontinuous [\textit{R. Paul} and \textit{P. Bhattacharya}, Quasi-pre-continuous functions, J. Indian Acad. Math. 14, No. 2, 115-126
Jafari, Saeid, Noiri, Takashi
openaire   +1 more source

Almost ω-continuous functions in bitopological spaces

open access: yes, 2022
. In this paper, as a generalization of u-ω-continuous functions, we introduce the notion of almost ω-continuous functions in bitopological spaces and obtain several characterizations and some of its ...
Rosas, Ennis   +3 more
core   +1 more source

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