Results 1 to 10 of about 364 (198)

Variations on the Brouwer Fixed Point Theorem: A Survey [PDF]

open access: goldMathematics, 2020
This paper surveys some recent simple proofs of various fixed point and existence theorems for continuous mappings in R n
Jean Mawhin
doaj   +2 more sources

Application of the Brouwer and the Kakutani fixed-point theorems to a discrete equation with a double singular structure [PDF]

open access: goldFixed Point Theory and Applications, 2018
Applying the method consisting of a combination of the Brouwer and the Kakutani fixed-point theorems to a discrete equation with a double singular structure, that is, to a discrete singular equation of which the denominator contains another discrete ...
Minoru Tabata, Nobuoki Eshima
doaj   +2 more sources

KKM implies the Brouwer fixed point theorem: Another proof

open access: goldResults in Nonlinear Analysis, 2020
It is well-known that the Brouwer fixed point theorem (BFPT), the weak Sperner combinatorial lemma, and the Knaster-Kuratowski-Mazurkiewicz (KKM) theorem are mutually equivalent and have scores of equivalent formulations and several thousand applications.
Sehie Park
doaj   +2 more sources

Existence of Solutions and Algorithm for a System of Variational Inequalities

open access: yesFixed Point Theory and Applications, 2010
We obtain some existence results for a system of variational inequalities (for short, denoted by SVI) by Brouwer fixed point theorem. We also establish the existence and uniqueness theorem using the projection technique for the SVI and suggest an ...
Yali Zhao   +3 more
doaj   +2 more sources

Fixed point theorems in R-metric spaces with applications

open access: yesAIMS Mathematics, 2020
The purpose of this paper is to introduce the notion of R-metric spaces and give a real generalization of Banach fixed point theorem. Also, we give some conditions to construct the Brouwer fixed point. As an application, we find the existence of solution
Siamak Khalehoghli   +2 more
doaj   +1 more source

On the Two-Dimensional Version of the Sperner Lemma and Brouwer’s Theorem

open access: yesAnnales Mathematicae Silesianae, 2022
In this work the Brouwer fixed point theorem for a triangle was proved by two methods based on the Sperner Lemma. One of the two proofs of Sperner’s Lemma given in the paper was carried out using the so-called index.
Barcz Eugeniusz
doaj   +1 more source

Certain Analysis of Solution for the Nonlinear Two-Point Boundary Value Problem with Caputo Fractional Derivative

open access: yesJournal of Function Spaces, 2022
In this paper, the existence and uniqueness of solutions for a nonlinear fractional differential equation with a two-point boundary condition in a Banach space are investigated by using the contraction mapping principle and the Brouwer fixed-point ...
Shayma Adil Murad
doaj   +1 more source

On Krasnoselskii's Cone Fixed Point Theorem

open access: yesFixed Point Theory and Applications, 2008
In recent years, the Krasnoselskii fixed point theorem for cone maps and its many generalizations have been successfully applied to establish the existence of multiple solutions in the study of boundary value problems of various types.
Man Kam Kwong
doaj   +2 more sources

Robust Stability of DC Microgrid Under Distributed Control

open access: yesIEEE Access, 2022
Compared with AC microgrid, DC microgrid has attracted more and more attention due to their high reliability and simple control. In this paper, we analyze the existence and stability of equilibrium of DC microgrid under distributed control.
Zhangjie Liu, Jiawei Li
doaj   +1 more source

The existence of solutions for the modified $(p(x),q(x))$-Kirchhoff equation

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2022
We consider the Dirichlet problem \begin{equation*} - \Delta^{K_p}_{p(x)} u(x) - \Delta^{K_q}_{q(x)} u(x) = f(x,u(x), \nabla u(x)) \quad \mbox{in }\Omega, \quad u\big{|}_{\partial \Omega}=0, \end{equation*} driven by the sum of a $p(x ...
Giovany Figueiredo, Calogero Vetro
doaj   +1 more source

Home - About - Disclaimer - Privacy