Results 21 to 30 of about 117,160 (165)

On Two-Point Boundary Value Problems and Fractional Differential Equations via New Quasi-Contractions

open access: yesMathematics, 2023
The aim of this paper is to introduce new forms of quasi-contractions in metric-like spaces and initiate more general conditions for the existence of invariant points for such operators.
Maha Noorwali, Mohammed Shehu Shagari
doaj   +1 more source

L-partial metrics and their topologies

open access: yesInternational Journal of Approximate Reasoning, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yi Shi 0010, Chong Shen 0003, Fu-Gui Shi
openaire   +2 more sources

On Information Orders on Metric Spaces

open access: yesInformation, 2021
Information orders play a central role in the mathematical foundations of Computer Science. Concretely, they are a suitable tool to describe processes in which the information increases successively in each step of the computation.
Oliver Olela Otafudu, Oscar Valero
doaj   +1 more source

Fuzzy Partial Metric Spaces and Fixed Point Theorems

open access: yesMathematics, 2022
Partial metrics constitute a generalization of classical metrics for which self-distance may not be zero. They were introduced by S.G. Matthews in 1994 in order to provide an adequate mathematical framework for the denotational semantics of programming ...
Halis Aygün   +3 more
doaj   +1 more source

On the extension of a partial metric to a tree metric

open access: yesDiscrete Mathematics, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Guénoche, Alain   +2 more
openaire   +3 more sources

On Banach fixed point theorems for partial metric spaces

open access: yesApplied General Topology, 2005
In this paper we prove several generalizations of the Banach fixed point theorem for partial metric spaces (in the sense of O’Neill) given in, obtaining as a particular case of our results the Banach fixed point theorem of Matthews ([12]), and some well ...
Oscar Valero
doaj   +1 more source

Cones of partial metrics

open access: yesContributions to Discrete Mathematics, 2011
A partial semimetric on a set X is a function (x,y)↦p(x,y)∈\RR≥0 satisfying p(x,y)=p(y,x), p(x,y)≥p(x,x) and p(x,z)≤p(x,y)+p(y,z)−p(y,y) for all x,y,z∈X. We study here the polyhedral convex cone PSMETn of all partial semimetrics on n points, using computations done for n≤6.
Michel Deza, Elena Deza
openaire   +1 more source

Recent Advances on the Results for Nonunique Fixed in Various Spaces

open access: yesAxioms, 2019
In this short survey, we aim to underline the importance of the non-unique fixed point results in various abstract spaces. We recall a brief background on the topic and we combine, collect and unify several existing non-unique fixed points in the ...
Erdal Karapınar
doaj   +1 more source

Partial quasi-metrics

open access: yesTheoretical Computer Science, 2006
A partial quasi-metric space \((X, p)\) consists of a set \(X\) and a distance function \(p: X\times X\to [0,\infty)\) satisfying (i) \(p(x, x)\leq\min\{p(x, y),p(y, x)\}\) whenever \(x,y\in X\), (ii) \(x= y\) iff \(p(x, x)= p(x, y)\) and \(p(y, y)= p(y, x)\) whenever \(x,y\in X\), (iii) \(p(x, z)+ p(y, y)\leq p(x, y)+ p(y, z)\) whenever \(x,y,z\in X\).
Hans-Peter A. Künzi   +2 more
openaire   +2 more sources

Multivalued interpolative type contractions on partial metric spaces [PDF]

open access: yesAUT Journal of Mathematics and Computing
This article presents the interpolative fixed point theorem with reference to complete partial metric spaces, by taking the multi-valued contraction into account.
Sirajo Yahaya, Mohammed Shehu Shagari
doaj   +1 more source

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