Results 91 to 100 of about 465 (165)

PARAMETRIC EKELAND'S VARIATIONAL PRINCIPLE AND APPLICATIONS FOR MIN-MAX PROBLEMS

open access: yes, 1995
Ekeland's variational principle is now a classical method for investigations of many non-linear problems in various areas in mathematics (see for instance [El], [E2] for a survey).
Pando Gr. Georgiev, United Nations
core  

On the ϵ-variational principle for set-valued mappings

open access: yes, 2007
In this paper, the well-known Ekeland variational principle is generalized to the case where set-valued mappings are involved. More specifically, the ϵ-efficient points of a vector optimization problem for set-valued mappings are investigated via a ...
Li, S.J.
core   +1 more source

An extension of Ekeland's variational principle to locally complete spaces

open access: yes, 2007
We prove an extension of Ekeland's variational principle to locally complete spaces which uses subadditive, strictly increasing continuous functions as perturbations. © 2006 Elsevier Inc. All rights reserved.
A García, C L García, C Bosch
core  

Well-posed Vector Optimization Problems and Vector Variational Inequalities [PDF]

open access: yes
In this paper we introduce notions of well-posedness for a vector optimization problem and for a vector variational inequality of differential type, we study their basic properties and we establish the links among them.
Rocca Matteo
core  

Multiple solutions for a problem with resonance involving the p-Laplacian

open access: yesAbstract and Applied Analysis, 1998
In this paper we will investigate the existence of multiple solutions for the problem (P)                                                         −Δpu+g(x,u)=λ1h(x)|u|p−2u,     in     Ω,    u∈H01,p(Ω) where Δpu=div(|∇u|p−2∇u) is the p-Laplacian operator,
C. O. Alves   +2 more
doaj   +1 more source

Ekeland-type variational principle with applications to nonconvex minimization and equilibrium problems

open access: yesNonlinear Analysis, 2019
The aim of the present paper is to establish a variational principle in metric spaces without assumption of completeness when the involved function is not lower semicontinuous.
Iram Iqbal, Nawab Hussain
doaj   +1 more source

A consequence of Djairo’s Lectures on the Ekeland variational principle [PDF]

open access: yes, 2017
In this paper we prove that if a functional has bounded minimum u, then is is possible, using Ekeland’s ε-variational principle, to build a minimizing sequence which is uniformly convergent to ...
Boccardo L., Orsina L.
core   +1 more source

Multiple positive solutions for equations involving critical Sobolev exponent in R^N

open access: yesElectronic Journal of Differential Equations, 1997
$$ -{ m div }(|abla u|^{m-2}abla u) = lambda h u^q+u^{m^*-1},quad{ m in}quad R^N,. $$ Using the Ekeland Variational Principle and the Mountain Pass Theorem, we show the existence of $lambda ^*>0$ such that there are at least two non-negative solutions ...
Claudianor Oliveira Alves
doaj  

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