Results 11 to 20 of about 343 (158)

A generalization of Ekeland's variational principle with applications

open access: yesElectronic Journal of Differential Equations, 2006
In this paper, we establish a variant of Ekeland's variational principle. This result suggest to introduce a generalization of the famous Palais-Smale condition.
Abdel R. El Amrouss, Najib Tsouli
doaj   +3 more sources

Generalized Ekeland’s variational principle with applications [PDF]

open access: yesJournal of Inequalities and Applications, 2019
By using the concept of Γ-distance, we prove EVP (Ekeland’s variational principle) on quasi-F-metric (q-F-m) spaces. We apply EVP to get the existence of the solution to EP (equilibrium problem) in complete q-F-m spaces with Γ-distances.
Eshagh Hashemi   +2 more
doaj   +2 more sources

A generalized form of Ekeland’s variational principle [PDF]

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2012
In this paper we prove a generalized version of the Ekeland variational principle, which is a common generalization of Zhong variational principle and Borwein Preiss Variational principle.
Farkas Csaba
doaj   +2 more sources

Multiple Solutions for a Singular Quasilinear Elliptic System [PDF]

open access: yesThe Scientific World Journal, 2013
We consider the multiplicity of nontrivial solutions of the following quasilinear elliptic system , , , , , where , , , , , . The functions , , , , , , and satisfy some suitable conditions. We will prove that the problem has at least two nontrivial
Lin Chen, Caisheng Chen, Zonghu Xiu
doaj   +2 more sources

Parametric Ekeland's variational principle

open access: yesApplied Mathematics Letters, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Georgiev, P.G., P.G. Georgiev
openaire   +3 more sources

A generalization of Ekeland’s variational principle by using the τ-distance with its applications [PDF]

open access: yesJournal of Inequalities and Applications, 2017
In this paper, a new version of Ekeland’s variational principle by using the concept of τ-distance is proved and, by applying it, an approximate minimization theorem is stated.
AP Farajzadeh, S Plubtieng, A Hoseinpour
doaj   +2 more sources

Maximum principle for a stochastic delayed system involving terminal state constraints [PDF]

open access: yesJournal of Inequalities and Applications, 2017
We investigate a stochastic optimal control problem where the controlled system is depicted as a stochastic differential delayed equation; however, at the terminal time, the state is constrained in a convex set.
Jiaqiang Wen, Yufeng Shi
doaj   +2 more sources

Vectorial Ekeland Variational Principles and Inclusion Problems in Cone Quasi-Uniform Spaces [PDF]

open access: yesAbstract and Applied Analysis, 2012
Some new vectorial Ekeland variational principles in cone quasi-uniform spaces are proved. Some new equivalent principles, vectorial quasivariational inclusion principle, vectorial quasi-optimization principle, vectorial quasiequilibrium principle are ...
Jiang Zhu   +3 more
doaj   +2 more sources

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   +2 more sources

Applications of an HIDS Theorem to the Existence of Fixed Point, Abstract Equilibria and Optimization Problems [PDF]

open access: yesAbstract and Applied Analysis, 2011
By applying hybrid inclusion and disclusion systems (HIDS), we establish several vectorial variants of system of Ekeland's variational principle on topological vector spaces, some existence theorems of system of parametric vectorial quasi-equilibrium ...
Wei-Shih Du
doaj   +2 more sources

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