Results 11 to 20 of about 1,115,420 (368)

Coupled Fixed-Point Theorems in Theta-Cone-Metric Spaces

open access: yesJournal of Mathematics, 2021
This paper gives further generalizations of some well-known coupled fixed-point theorems. Specifically, Theorem 3 of the paper is the generalization of the Baskar–Lackshmikantham coupled fixed-point theorem, and Theorem 5 is the generalization of the ...
Sahar Mohamed Ali Abou Bakr
doaj   +1 more source

Some Fixed Point Theorems in Fuzzy n-Normed Spaces [PDF]

open access: yes, 2010
The main purpose of this paper is to study the existence of a fixed points in fuzzy n-normed spaces. we proved our main results, a fixed point theorem for a self mapping and a common fixed point theorem for a pair of weakly compatible mappings on fuzzy n-
Elagan, Sayed Khalil   +1 more
core   +1 more source

Some New Generalization of Darbo’s Fixed Point Theorem and Its Application on Integral Equations

open access: yesMathematics, 2019
In this article, we propose some new fixed point theorem involving measure of noncompactness and control function. Further, we prove the existence of a solution of functional integral equations in two variables by using this fixed point theorem in Banach
Anupam Das, B. Hazarika, Poom Kumam
semanticscholar   +1 more source

New Applications of Perov’s Fixed Point Theorem

open access: yesMathematics, 2022
The goal of this paper is to consider a differential equation system written as an interesting equivalent form that has not been used before. Using Perov’s fixed point theorem in generalized metric spaces, the existence and uniqueness of the solution are
Sorin Mureşan   +2 more
doaj   +1 more source

Caristi’s Fixed Point Theorem and Subrahmanyam’s Fixed Point Theorem in ν-Generalized Metric Spaces

open access: yesJournal of Function Spaces, 2015
We discuss the completeness of ν-generalized metric spaces in the sense of Branciari. We also prove generalizations of Subrahmanyam’s and Caristi’s fixed point theorem.
Badriah Alamri   +2 more
doaj   +1 more source

Generalization of Rakotch's fixed Point Theorem

open access: yesRevista de Matemática: Teoría y Aplicaciones, 2011
In this paper we get some generalizations of Rakotch's results [10] using the notion of $\omega ?distancia$ on a metric ...
José R. Morales
doaj   +1 more source

Brouwer's fixed-point theorem in real-cohesive homotopy type theory [PDF]

open access: yesMathematical Structures in Computer Science, 2015
We combine homotopy type theory with axiomatic cohesion, expressing the latter internally with a version of ‘adjoint logic’ in which the discretization and codiscretization modalities are characterized using a judgemental formalism of ‘crisp variables ...
Michael Shulman
semanticscholar   +1 more source

A fixed point theorem and attractors [PDF]

open access: yesProceedings of the American Mathematical Society, 1978
We investigate attractors for compact sets by considering a certain quotient space. The following theorem is included. Let f : G → G f:G \to G , G a closed convex subset of a Banach space, f a mapping satisfying (i) there exists M ⊂ G M \subset G which is an ...
Janos, Ludvik, Solomon, J. L.
openaire   +1 more source

A fixed point theorem revisited [PDF]

open access: yesProceedings of the American Mathematical Society, 1988
A version of a theorem commonly referred to as Caristi’s Theorem is given. It has an elementary constructive proof and it includes many generalizations of Banach’s fixed point theorem. Several examples illustrate the diversity that can occur.
Bollenbacher, Alberta, Hicks, T. L.
openaire   +2 more sources

On orthogonal sets and Banach fixed point theorem

open access: yes, 2017
We introduce the notion of the orthogonal sets and give a real generalization of Banach’ fixed point theorem. As an application, we find the existence of solution for a first-order ordinary differential equation.
M. Gordji, M. Rameani, M. Sen, Y. Cho
semanticscholar   +1 more source

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