Results 41 to 50 of about 585 (200)

The Multiplicity of Nontrivial Solutions for a New px-Kirchhoff-Type Elliptic Problem

open access: yesJournal of Function Spaces, 2021
In the paper, we study the existence of weak solutions for a class of new nonlocal problems involving a px-Laplacian operator. By using Ekeland’s variational principle and mountain pass theorem, we prove that the new px-Kirchhoff problem has at least two
Chang-Mu Chu, Yu-Xia Xiao
doaj   +1 more source

High Order Inverse Function Theorems [PDF]

open access: yes, 1988
We prove several first order and high order inverse mapping theorems for maps defined on a complete metric space and provide a number of ...
Frankowska, H.
core   +1 more source

Caffarelli–Kohn–Nirenberg inequality for biharmonic equations with inhomogeneous term and Rellich potential

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2023
In this article, multiplicity of nontrivial solutions for an inhomogeneous singular biharmonic equation with Rellich potential are studied. Firstly, a negative energy solution of the studied equations is achieved via the Ekeland's variational principle ...
Yang Yu, Yulin Zhao
doaj   +1 more source

On Ekeland’s Variational Principle in Rectangular bmertic Spaces

open access: yesJournal of Harbin University of Science and Technology, 2020
Ekeland′s variational principle plays an important role in fixed point theory. It has applications in many fields such as optimization theory, control theory, critical point theory and others.
HUANG Shuai, CHEN Lili, LIU Xin
doaj   +1 more source

Exact and approximate vector Ekeland variational principles

open access: yesOptimization, 2021
Producción ...
T. Q. Bao   +3 more
openaire   +2 more sources

Maximum principle for near-optimality of stochastic delay control problem

open access: yesAdvances in Difference Equations, 2017
This paper is concerned with near-optimality for stochastic control problems of linear delay systems with convex control domain and controlled diffusion. Necessary and sufficient conditions for a control to be near-optimal are established by Pontryagin’s
Feng Zhang
doaj   +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

Existence for Elliptic Equation Involving Decaying Cylindrical Potentials with Subcritical and Critical Exponent

open access: yesInternational Journal of Differential Equations, 2015
We consider the existence of nontrivial solutions to elliptic equations with decaying cylindrical potentials and subcritical exponent. We will obtain a local minimizer by using Ekeland’s variational principle.
Mohammed El Mokhtar Ould El Mokhtar
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

A minimization theorem in quasi-metric spaces and its applications

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
We prove a new minimization theorem in quasi-metric spaces, which improves the results of Takahashi (1993). Further, this theorem is used to generalize Caristi's fixed point theorem and Ekeland's ϵ-variational principle.
Jeong Sheok Ume
doaj   +1 more source

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