Results 21 to 30 of about 1,271,876 (279)

Preliminary study of muscle contraction assessment by NIR spectroscopy [PDF]

open access: yes, 1998
NIR spectroscopy allows monitoring of muscle oxygenation and perfusion during contraction. The knowledge of modifications of blood characteristics in body tissues has relevant clinical interest. A compact and reliable device, which makes use of two laser
Pavesi, Roberto   +6 more
core   +4 more sources

Generalized contraction principle

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1983
Fixed point theorems are proved for contraction maps on M-convex spaces.
Dipak Chatterjee
doaj   +1 more source

Krasnoselskii's theorem in generalized Banach spaces and application

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
The purpose of this paper is to extend Krasnoselskii's fixed point theorem to the case of generalized Banach spaces for singlevalued and multivalued operators.
I. R. Petre, Adrian Petrusel
doaj   +1 more source

A discrete fixed point theorem of Eilenberg as a particular case of the contraction principle

open access: yesFixed Point Theory and Applications, 2004
We show that a discrete fixed point theorem of Eilenberg is equivalent to the restriction of the contraction principle to the class of non-Archimedean bounded metric spaces.
Jacek Jachymski
doaj   +2 more sources

A generalization of contraction principle

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1981
In this paper, a generalized mean value contraction is introduced. This contraction is an extension of the contractions of earlier researchers and of the generalized mean value non-expansive mapping.
K. M. Ghosh
doaj   +1 more source

Boundary value problems for nonlinear fractional differential equations and inclusions with nonlocal and fractional integral boundary conditions [PDF]

open access: yesOpuscula Mathematica, 2013
This paper studies the boundary value problem of nonlinear fractional differential equations and inclusions of order \(q \in (1,2]\) with nonlocal and integral boundary conditions.
Sotiris K. Ntouyas
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

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

The contraction mapping principle [PDF]

open access: yes, 1986
In the world of mathematics, it is often necessary to approximate the solution to a problem by using an iterative method. One such method, not totally dependent on the initial guess, is the contraction mapping method.
Rosenbloom, Elaine
core   +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

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