Results 41 to 50 of about 2,807 (153)

Localization of Nash-type equilibria for systems with partial variational structure

open access: yesJournal of Numerical Analysis and Approximation Theory, 2023
In this paper, we aim to generalize an existing result by obtaining localized solutions within bounded convex sets, while also relaxing specific initial assumptions.
Andrei Stan
doaj   +1 more source

About [q]-regularity properties of collections of sets [PDF]

open access: yes, 2014
We examine three primal space local Hoelder type regularity properties of finite collections of sets, namely, [q]-semiregularity, [q]-subregularity, and uniform [q]-regularity as well as their quantitative characterizations.
Kruger, Alexander Y., Thao, Nguyen H.
core   +3 more sources

Nonlocal Kirchhoff superlinear equations with indefinite nonlinearity and lack of compactness

open access: yes, 2019
We study the following Kirchhoff equation $$- \left(1 + b \int_{\mathbb{R}^3} |\nabla u|^2 dx \right) \Delta u + V(x) u = f(x,u), \ x \in \mathbb{R}^3.$$ A special feature of this paper is that the nonlinearity $f$ and the potential $V$ are indefinite ...
Li, Lin   +2 more
core   +2 more sources

Nonlinear Versions of a Vector Maximal Principle [PDF]

open access: yes, 2011
Some nonlinear extensions of the vector maximality statement established by Goepfert, Tammer and Zalinescu [Nonl. Anal., 39 (2000), 909-922] are given. Basic instruments for these are the Brezis-Browder ordering principle [Advances Math., 21 (1976), 355 ...
Turinici, Mihai
core   +1 more source

One remark to Ekeland's variational principle

open access: yesComputers & Mathematics with Applications, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Arutyunov, A., Bobylev, N., Korovin, S.
openaire   +1 more source

Combined effects of concave and convex nonlinearities in nonperiodic fourth-order equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2018
In this paper, we consider the multiplicity of nontrivial solutions for a class of nonperiodic fourth-order equation with concave and convex nonlinearities.
Ruiting Jiang, Chengbo Zhai
doaj   +1 more source

An induction theorem and nonlinear regularity models [PDF]

open access: yes, 2015
A general nonlinear regularity model for a set-valued mapping $F:X\times R_+\rightrightarrows Y$, where $X$ and $Y$ are metric spaces, is considered using special iteration procedures, going back to Banach, Schauder, Lusternik and Graves.
Khanh, Phan Q.   +2 more
core   +3 more sources

Critical Point Theorems for Nonlinear Dynamical Systems and Their Applications

open access: yesFixed Point Theory and Applications, 2010
We present some new critical point theorems for nonlinear dynamical systems which are generalizations of Dancš-Hegedüs-Medvegyev's principle in uniform spaces and metric spaces by applying an abstract maximal element principle established ...
Wei-Shih Du
doaj   +1 more source

Ekeland variational principles for vector equilibrium problems

open access: yesOptimization, 2022
This work concerns Ekeland variational principles for scalar and vector cyclically antimonotone bifunctions on complete metric spaces. The scalar results work for extended bifunctions and they are obtained by a generalized version of the Dancs–Hegedüs–Medvegyev's fixed point theorem.
Bao, T. Q., Gutiérrez Vaquero, César
openaire   +2 more sources

Multiplicity of Homoclinic Solutions for a Class of Nonperiodic Fourth-Order Differential Equations with General Perturbation

open access: yesAbstract and Applied Analysis, 2014
In this paper, we investigate a class of nonperiodic fourth-order differential equations with general perturbation. By using the mountain pass theorem and the Ekeland variational principle, we obtain that such equations possess two homoclinic solutions ...
Liu Yang
doaj   +1 more source

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