Results 11 to 20 of about 1,043,898 (286)

Asymptotic fixed points for nonlinear contractions [PDF]

open access: yesFixed Point Theory and Applications, 2005
Recently, W. A. Kirk proved an asymptotic fixed point theorem for nonlinear contractions by using ultrafilter methods. In this paper, we prove his theorem under weaker assumptions. Furthermore, our proof does not use ultrafilter methods.
Chen Yong-Zhuo
doaj   +3 more sources

On Nonlinear Set-Valued $$\theta $$θ-Contractions

open access: yesBulletin of the Malaysian Mathematical Sciences Society, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Durmaz, Gonca, Altun, Ishak
openaire   +3 more sources

A non-linear approach to modelling of electrically stimulated skeletal muscle [PDF]

open access: yes, 2001
This paper is concerned with the development and analysis of a nonlinear approach to modeling of the contraction of electrically stimulated skeletal muscle.
Gollee, H.   +2 more
core   +8 more sources

Three-dimensional flow of Newtonian and Boger fluids in square-square contractions [PDF]

open access: yes, 2009
The flow of a Newtonian fluid and a Boger fluid through sudden square–square contractions was investigated experimentally aiming to characterize the flow and provide quantitative data for benchmarking in a complex three-dimensional flow.
Sousa, P.C.   +3 more
core   +4 more sources

Existence of a solution for a nonlinear integral equation by nonlinear contractions involving simulation function in partially ordered metric space [PDF]

open access: yes, 2023
In a recent paper, Khojasteh et al. presented a new collection of simulation functions, said Z-contraction. This form of contraction generalizes the Banach contraction and makes different types of nonlinear contractions.
Shams, Maryam   +4 more
core   +1 more source

Nonlinear generalized cyclic contractions in complete G-metric spaces and applications to integral equations [PDF]

open access: yes, 2013
In this paper we introduce generalized cyclic contractions in G-metric spaces and establish some fixed point theorems. The presented theorems extend and unify various known fixed point results. Examples are given in the support of these results.
Kadelburg, Zoran   +1 more
core   +1 more source

Semigroups of nonlinear contractions on convex sets

open access: yesJournal of Functional Analysis, 1970
H Brezis, A Pazy
exaly   +3 more sources

Fixed point theorems for Geraghty-type mappings applied to solving nonlinear Volterra-Fredholm integral equations in modular G-metric spaces [PDF]

open access: yesArab Journal of Mathematical Sciences, 2021
Purpose – The authors prove the existence and uniqueness of fixed point of mappings satisfying Geraghty-type contractions in the setting of preordered modular G-metric spaces.
Godwin Amechi Okeke, Daniel Francis
doaj   +1 more source

Fixed points of multivalued nonlinear F-contractions on complete metric spaces [PDF]

open access: yes, 2016
We introduce a new concept for multivalued maps, also called multivalued nonlinear F-contraction, and give a fixed point result. Our result is a proper generalization of some recent fixed point theorems including the famous theorem of Klim and ...
Mınak, Gülhan   +3 more
core   +1 more source

Note on Nonlinear Contraction Semigroups [PDF]

open access: yesProceedings of the American Mathematical Society, 1969
1. Let X be a Banach space and let { F(£); 0^£< » } be a family of nonlinear operators from X into itself satisfying the following conditions: (i) T(0)=I (the identity) and T{£+7]) = T{£)T{v) for ?, t?^0. (ii) ||r(£)x-7X£);y||=g||x-3,|| for x, y EX. (iii) limj_o+ ||F(£)x — x|| =0 for xEX.
openaire   +2 more sources

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