Results 81 to 90 of about 1,030,362 (113)

Existence of solutions for a Kirchhoff problem involving p(x) - biharmonic operator

open access: yesCumhuriyet Science Journal
This article is dealt with a Kirchhoff problem involving p(x) - biharmonic operator. By means of the Variational method and Ekeland’s variational principle, we establish the existence of a nontrivial weak solution in Sobolev spaces with variable exponent
Zehra Yücedağ, İlknur Gürbüz
doaj   +1 more source

Existence and multiplicity of weak solutions for a class of degenerate nonlinear elliptic equations

open access: yesBoundary Value Problems, 2006
The goal of this paper is to study the existence and the multiplicity of non-trivial weak solutions for some degenerate nonlinear elliptic equations on the whole space RN. The solutions will be obtained in a subspace of the Sobolev space W1/p(RN).
Mihai Mihăilescu
doaj   +1 more source

Applications of Ekeland's principle to locally Lipschitzian functionals

open access: yes, 2000
We prove an extension of a complement to Ekeland's variational principle for functionals whose domain is a particular subset of a Banach space.
STURIALE G.   +2 more
core  

Hoelder stability, Solution schemes and Ekeland's principle [PDF]

open access: yes, 2011
We present two basic lemmas on exact and approximate solutions of inclusions and equations in general spaces. Its applications involve Ekeland’s principle, characterize calmness, lower semicontinuity and the Aubin property of solution sets in some ...
Kummer, Bernd
core   +1 more source

Positive Solutions for a Nonhomogeneous Kirchhoff Equation with the Asymptotical Nonlinearity in R3

open access: yesAbstract and Applied Analysis, 2014
We study the following nonhomogeneous Kirchhoff equation: -(a+b∫R3‍|∇u|2dx)Δu+u=k(x)f(u)+h(x),  x∈R3,  u∈H1(R3),  u>0,  x∈R3, where f is asymptotically linear with respect to t at infinity.
Ling Ding, Lin Li, Jin-Ling Zhang
doaj   +1 more source

The Ekeland's Variational Principle

open access: yes, 2022
The present work has as target audience all students who have experience in Real Analysis. Some introductory results of Functional Analysis will be presented, as some definitions and results in metric spaces, having as main result: Ekeland’s ...
Azevedo, Mateus Vinicius Santos de
core  

A maximum principle for nonsmooth optimal-control problems with state constraints [PDF]

open access: yes, 1982
Optimality conditions are derived in the form of a maximum principle governing solutions to an optimal control problem which involves state constraints.
Vinter, R.B, Pappas, G
core   +1 more source

An order drop theorem

open access: yesLe Matematiche, 2006
A drop theorem on ordered metric spaces is established from the (pre) order version of Ekeland’s variational principle in Turinici [An St UAIC Ia (Math), 36 (1990), 329-352]. The logical equivalence between these results is also discussed.
Mihai Turinici
doaj  

Minimal element theorems and Ekeland's variational principle with new set order relations

open access: yes, 2018
By using scalarization functions, we study minimal element theorem, Ekeland's variational principle, Caristi's fixed point theorem, Takahashi's minimization theorem under the set order relations on the family of sets defined by means of Minkowski ...
Yao, Jen Chih   +2 more
core   +1 more source

An extension of Pontryagin's principle for state-constrained optimal control of semilinear elliptic equations and variational inequalities [PDF]

open access: yes, 1992
Projet PROMATHThis paper deals with state-constrained optimal control problems governed by semilinear elliptic equations or variational inequalities. By using Ekeland's principle, we derive a minimum principle of Pontryagin's type under some stability ...
Casas, Eduardo, Bonnans, J. Frederic
core   +2 more sources

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