Results 11 to 20 of about 1,231,124 (145)

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   +1 more source

Ekeland's variational principle, minimax theorems and existence of nonconvex equilibria in complete metric spaces [PDF]

open access: yes, 2006
In this paper, we introduce the concept of τ-function which generalizes the concept of w-distance studied in the literature. We establish a generalized Ekeland's variational principle in the setting of lower semicontinuous from above and τ-functions.
Lai-Jiu Lin, Wei-Shih Du
semanticscholar   +2 more sources

EKELAND'S VARIATIONAL PRINCIPLE IN S^{JS}-METRIC SPACES [PDF]

open access: yes, 2021
We prove Ekeland's variational principle in  S^{JS} - metric spaces.
Beg, Ismat, Saha, Mantu, Roy, Kuhal
core   +1 more source

Ekeland's variational principle and its equivalent theorems in vector optimization [PDF]

open access: yes, 2008
We present a simple proof of vectorial Ekeland's variational principle, vectorial Caristi's fixed point theorem and vectorial Takahashi's nonconvex minimization theorem.
Yousuke Araya
semanticscholar   +2 more sources

A New Variational Inequality with its Application [PDF]

open access: yes, 2009
In this paper, we suggest the iterative algorithm for a variational inequality by using the auxiliary principle technique, which is closely related to the optimal boundary control of time-varying population system with age-dependence and spatial ...
Shi, Chao-Feng
core   +6 more sources

Equilibrium investment with random risk aversion

open access: yesMathematical Finance, Volume 33, Issue 3, Page 946-975, July 2023., 2023
Abstract We solve the problem of an investor who maximizes utility but faces random preferences. We propose a problem formulation based on expected certainty equivalents. We tackle the time‐consistency issues arising from that formulation by applying the equilibrium theory approach.
Sascha Desmettre, Mogens Steffensen
wiley   +1 more source

PROTOCOL: Participation in organised sport to improve and prevent adverse developmental trajectories of at‐risk youth: A systematic review

open access: yesCampbell Systematic Reviews, Volume 19, Issue 2, June 2023., 2023
Abstract This is the protocol for a Campbell systematic review. The main objective of this review is to answer the research question: What are the effects of organised sport on risk behaviour, personal, emotional and social skills of young people, who either have experienced or is at‐risk of experiencing an adverse outcome?
Trine Filges   +3 more
wiley   +1 more source

Bundling and nonlinear pricing in telecommunications

open access: yesThe RAND Journal of Economics, Volume 54, Issue 2, Page 268-298, Summer 2023., 2023
Abstract I develop a multiproduct nonlinear pricing model where a firm sells both discrete and continuous services to consumers with multidimensional heterogeneity. I derive the optimal selling mechanism and provide primitive conditions under which different bundling strategies arise. Exploiting both the firm and the consumer's optimality conditions, I
Yao Luo
wiley   +1 more source

On Nonlocal Elliptic Problems of the Kirchhoff Type Involving the Hardy Potential and Critical Nonlinearity

open access: yesJournal of Applied Mathematics, Volume 2023, Issue 1, 2023., 2023
In this article, we deal with the nonlocal elliptic problems of the Kirchhoff type involving the Hardy potential and critical nonlinearity on a bounded domain in R3. Under an appropriate condition on the nonhomogeneous term and using variational methods, we obtain two distinct solutions.
M. E. O. El Mokhtar   +3 more
wiley   +1 more source

Critical Fractional p‐Laplacian System with Negative Exponents

open access: yesJournal of Function Spaces, Volume 2023, Issue 1, 2023., 2023
In this paper, we consider a class of fractional p‐Laplacian problems with critical and negative exponents. By decomposition of the Nehari manifold, the existence and multiplicity of nontrivial solutions for the above problems are established with respect to a sufficiently small parameter.
Qinghao Zhu, Jianming Qi, Baowei Feng
wiley   +1 more source

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