Results 21 to 30 of about 303,423 (281)

A Generalization of Banach's Contraction Principle [PDF]

open access: yesProceedings of the American Mathematical Society, 1974
Let T : M → M T:M \to M be a mapping of a metric space ( M , d ) (M,d) into itself. A mapping T T will be called a quasi-contraction iff d ( T x , T y ) ⩽ q
openaire   +2 more sources

Some fixed point results in complete generalized metric spaces

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2018
The Banach contraction principle is the most important result. This principle has many applications and some authors was interested in this principle in various metric spaces as Brianciari.
S.M. Sangurlu, D. Turkoglu
doaj   +1 more source

Generalizations of Banach's contraction principle and Kannan and Chatterjea's theorems for cyclic and non-cyclic mappings [PDF]

open access: yesJournal of Mahani Mathematical Research, 2023
‎Two interesting extensions of Banach contraction principle to mappings that don't to be continuous‎, ‎are Kannan and Chatterjea's theorems‎. ‎Before this‎, ‎in the cyclical form‎, ‎extensions of these two theorems and Banach contraction principle were ...
Akram Safari-Hafshejani
doaj   +1 more source

Boundary dynamics of asymptotically flat 3D gravity coupled to higher spin fields [PDF]

open access: yes, 2014
We construct a two-dimensional action principle invariant under a spin-three extension of BMS$_3$ group. Such a theory is obtained through a reduction of Chern-Simons action with a boundary.
Gonzalez, Hernan A., Pino, Miguel
core   +2 more sources

Some variants of Ćirić’s multi-valued contraction principle

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2019
In this article, a study of the fixed point problem for Ćirić type multi-valued operators is presented. More precisely, some variants ofĆirić’s contraction principle for multi-valued operators, as well as a strict fixed point principle forĆirić type ...
Alecsa Cristian Daniel, Petruşel Adrian
doaj   +1 more source

An extension of Banach’s contraction principle [PDF]

open access: yesProceedings of the American Mathematical Society, 1961
1. A. Borel, Seminar on transformation groups, Annals of Mathematics Studies No. 46, Princeton, 1960. 2. G. E. Bredon, Frank Raymond, R. F. Williams, p-adic groups of transformations, to appear in Trans. Amer. Math. Soc. 3. D. Montgomery and L. Zippin, Topological transformation groups, New YorkLondon, Interscience, 1955. 4.
openaire   +1 more source

On Jungck–Branciari–Wardowski Type Fixed Point Results

open access: yesMathematics, 2021
The terms of F−integral contraction as well as (ϖ,ζ˜,F,i)−integral contraction are introduced. Fixed point and common fixed point theorems are established. For the mapping F we use only the supposition that it is strictly increasing.
Biljana Carić   +4 more
doaj   +1 more source

A Coupled Random Fixed Point Result With Application in Polish Spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2018
In this paper, we present a new concept of random contraction and prove a coupled random fixed point theorem under this condition which generalizes stochastic Banach contraction principle.
Rashwan Ahmed Rashwan   +1 more
doaj   +1 more source

Representation of functionals of Ito processes and their first exit times [PDF]

open access: yes, 2010
The representation theorem is obtained for functionals of non-Markov processes and their first exit times from bounded domains. These functionals are represented via solutions of backward parabolic Ito equations. As an example of applications, analogs of
Dokuchaev, Nikolai
core   +2 more sources

Condensor Principle and the Unit Contraction [PDF]

open access: yesNagoya Mathematical Journal, 1967
Deny introduced in [4] the notion of functional spaces by generalizing Dirichlet spaces. In this paper, we shall give the following necessary and sufficient conditions for a functional space to be a real Dirichlet space.Let be a regular functional space with respect to a locally compact Hausdorff space X and a positive measure ξ in X.
openaire   +2 more sources

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