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On Tarski's fixed point theorem [PDF]

open access: yesProceedings of the American Mathematical Society, 2014
A concept of abstract inductive definition on a complete lattice is formulated and studied. As an application, a constructive and predicative version of Tarski's fixed point theorem is obtained.Comment: Proc. Amer. Math.
Curi, Giovanni
core   +4 more sources

A fractional order Monkeypox model with protected travelers using the fixed point theorem and Newton polynomial interpolation [PDF]

open access: goldHealthc Anal (N Y), 2023
Agnes Adom‐Konadu   +4 more
openalex   +2 more sources

On Krasnoselskii's Cone Fixed Point Theorem

open access: yesFixed Point Theory and Applications, 2008
In recent years, the Krasnoselskii fixed point theorem for cone maps and its many generalizations have been successfully applied to establish the existence of multiple solutions in the study of boundary value problems of various types.
Kwong ManKam
doaj   +2 more sources

On a Fixed Point Theorem of Kirk [PDF]

open access: yesProceedings of the American Mathematical Society, 1995
Let X be a reflexive Banach space, D an open and bounded subset of X, and T : D ¯ → X T:\bar D \to X a continuous mapping which is locally pseudocontractive on D.
Morales, Claudio H.   +1 more
openaire   +1 more source

A uniqueness theorem for fixed points [PDF]

open access: yesProceedings of the American Mathematical Society, 1980
In a recent paper, R. Kellogg [3] showed that if F : D ¯ → D ¯ F:\bar D \to \bar D is a completely continuous map of the closure of a bounded, convex, open set D in a real Banach space X, F
Smith, H. L., Stuart, C. A.
openaire   +2 more sources

A short and constructive proof of Tarski’s fixed-point theorem [PDF]

open access: yes, 2005
I give short and constructive proofs of Tarski’s fixed-point theorem, and of Zhou’s extension of Tarski’s fixed-point theorem to set-valued ...
Echenique, Federico
core   +3 more sources

A fixed point theorem [PDF]

open access: yesProceedings of the American Mathematical Society, 1956
Suppose that space is metric. A chain is a finite collection of open sets d1, d2, * * * , dn such that di intersects dj if and only if I i-jj I 1. If the elements of a chain are of diameter less than a positive number e, that chain is said to be an e-chain.
openaire   +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

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

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

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