Results 11 to 20 of about 1,521,259 (326)

Coupled Potts models: Self-duality and fixed point structure [PDF]

open access: yesNuclear Physics B, 1999
We consider q-state Potts models coupled by their energy operators. Restricting our study to self-dual couplings, numerical simulations demonstrate the existence of non-trivial fixed points for 2
Affleck   +57 more
core   +3 more sources

Nonlinear Contractive Conditions for Coupled Cone Fixed Point Theorems [PDF]

open access: yesFixed Point Theory and Applications, 2010
We establish some new coupled fixed point theorems for various types of nonlinear contractive maps in the setting of quasiordered cone metric spaces which not only obtain several coupled fixed point theorems announced by many authors but also generalize ...
Wei-Shih Du
doaj   +5 more sources

An Illusion: “A Suzuki Type Coupled Fixed Point Theorem”

open access: yesAbstract and Applied Analysis, 2014
We admonish to be careful on studying coupled fixed point theorems since most of the reported fixed point results can be easily derived from the existing corresponding theorems in the literature. In particular, we notice that the recent paper [Semwal and
Hamed H. Alsulami   +3 more
doaj   +4 more sources

Coupled fixed point theorems in complete metric spaces endowed with a directed graph and application

open access: goldOpen Mathematics, 2017
The purpose of this paper is to present some existence results for coupled fixed point of a (φ,ψ) —contractive condition for mixed monotone operators in metric spaces endowed with a directed graph.
Kir Mehmet   +2 more
doaj   +3 more sources

Results of coupled iterative fixed point approximation

open access: diamondAnnals of Mathematics and Computer Science
Let X be a Banach space and F a subset of X. In this paper, we showed weak and strong convergence theorems for a Krasnoselskij-type iterative method to approximate coupled solution of nonexpansive operator E: FxF-> F, where F is nonempty, depending on two variables.
Afeez Oyekanmi, K. Rauf
openalex   +3 more sources

Some Fixed Point Theorems in Generalized Metric Spaces Endowed with Vector-valued Metrics and Application in Linear and Nonlinear Matrix Equations [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2020
Let $mathcal{X}$ be a partially ordered set and $d$ be a generalized metric on $mathcal{X}$. We obtain some results in coupled and coupled coincidence of $g$-monotone functions on $mathcal{X}$, where $g$ is a function from $mathcal{X}$ into itself ...
Hasan Hosseinzadeh
doaj   +1 more source

Nonequilibrium Fixed Points of Coupled Ising Models [PDF]

open access: yesPhysical Review X, 2020
19+11 pages, 7+9 ...
Jeremy T. Young   +3 more
openaire   +4 more sources

Fixed point and coupled fixed point theorems on b-metric-like spaces [PDF]

open access: yesJournal of Inequalities and Applications, 2013
Abstract We first introduce the concept of b-metric-like space which generalizes the notions of partial metric space, metric-like space and b-metric space. Then we establish the existence and uniqueness of fixed points in a b-metric-like space as well as in a partially ordered b-metric-like space.
Alghamdi, Mohammed   +2 more
openaire   +2 more sources

Asymptotic freedom in Horava-Lifshitz gravity [PDF]

open access: yes, 2014
We use the Wetterich equation for foliated spacetimes to study the RG flow of projectable Horava-Lifshitz gravity coupled to n Lifshitz scalars. Using novel results for anisotropic heat kernels, the matter-induced beta functions for the gravitational ...
D'Odorico, Giulio   +2 more
core   +7 more sources

Coupled common best proximity point theorems for nonlinear contractions in partially ordered metric spaces

open access: yesAIMS Mathematics, 2020
In this paper, we first introduce the concept of mixed γ-proximally monotone property type mappings and investigate the existence of the coupled proximally coincidence point for such mappings in partially ordered complete metric spaces.
Raju Gopi   +3 more
doaj   +1 more source

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