Results 31 to 40 of about 986,794 (335)

Renormalization of QED with planar binary trees [PDF]

open access: yes, 2000
The renormalized photon and electron propagators are expanded over planar binary trees. Explicit recurrence solutions are given for the terms of these expansions.
Brouder, Christian, Frabetti, Alessandra
core   +2 more sources

Notes on Knaster-Tarski Theorem versus Monotone Nonexpansive Mappings

open access: yesMoroccan Journal of Pure and Applied Analysis, 2018
The purpose of this note is to discuss the recent paper of Espínola and Wiśnicki about the fixed point theory of monotone nonexpansive mappings. In their work, it is claimed that most of the fixed point results of this class of mappings boil down to the ...
Khamsi Mohamed Amine
doaj   +1 more source

Dependences related to strict binary relations

open access: yesTheoretical Computer Science, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Shyr-Shen Yu, Y. T. Yeh, H. K. Hsiao
openaire   +3 more sources

THE RESEARCH OF THE POLLUTION OF SPRINGS IN THE CITY OF STAVROPOL BY THE METHOD OF FACTOR ANALYSIS

open access: yesНаука. Инновации. Технологии, 2022
The researches of pollution of six springs in Stavropol were made according to thirteen kinds of contamination by factor analysis. Analysis of samples was carried out on the basis of Scientific-Educational Laboratory «Ecoanalytical Laboratory of ...
Inna Vladimirovna Begday   +2 more
doaj  

Relation Theoretic Common Fixed Point Results for Generalized Weak Nonlinear Contractions with an Application

open access: yesAxioms, 2019
In this paper, by introducing the concept of generalized Ćirić-type weak ( ϕ g , R ) -contraction, we prove some common fixed point results in partial metric spaces endowed with binary relation R .
Atiya Perveen   +2 more
doaj   +1 more source

Coupled fixed point sets with data-dependence and stability [PDF]

open access: yesSurveys in Mathematics and its Applications, 2022
In this paper we establish a coupled fixed point theorem of a coupled multivalued mapping defined on a complete metric space. In our result we use a new contractive inequality. There are rational terms in the expression of the inequality. The contractive
Binayak S. Choudhury   +2 more
doaj  

On the properties of contact binary stars

open access: yes, 2004
A catalogue of light curve solutions of contact binary stars has been compiled. It contains the results of 159 light curve solutions. Properties of contact binary stars were studied by using the catalogue data. As it is well known since Lucy's (1968a,b)
Binnendijk   +22 more
core   +1 more source

Relation-theoretic fixed point theorems under a new implicit function with applications to ordinary differential equations

open access: yesAIMS Mathematics, 2020
In this paper, we introduce a new implicit function without any continuity requirement and utilize the same to prove unified relation-theoretic fixed point results. We adopt some examples to exhibit the utility of our implicit function.
Waleed M. Alfaqih   +3 more
doaj   +1 more source

Perov Fixed-Point Results on F-Contraction Mappings Equipped with Binary Relation

open access: yesMathematics, 2023
The purpose of this article is to discuss some new aspects of the vector-valued metric space. The idea of an arbitrary binary relation along with the well-known F contraction is used to demonstrate the existence of fixed points in the context of a ...
Fahim Ud Din   +3 more
doaj   +1 more source

Relation-Theoretic Contraction Principle In Metric Spaces Using Multiplicative Contraction

open access: yesRatio Mathematica, 2023
Alam and Imdad have presented a novel application of the Banach contraction principle on a complete metric spaces with a binary relation. We have extended the concept of binary relation with the multiplicative contraction in a complete metric spaces.
Radha Yadav, Balbir Singh
doaj   +1 more source

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