Results 1 to 10 of about 34 (34)

Supersolutions to nonautonomous Choquard equations in general domains

open access: yesAdvances in Nonlinear Analysis, 2023
We consider the nonlocal quasilinear elliptic problem: −Δmu(x)=H(x)((Iα*(Qf(u)))(x))βg(u(x))inΩ,-{\Delta }_{m}u\left(x)=H\left(x){(\left({I}_{\alpha }* \left(Qf\left(u)))\left(x))}^{\beta }g\left(u\left(x))\hspace{1.0em}\hspace{0.1em}\text{in}\hspace{0 ...
Aghajani Asadollah, Kinnunen Juha
doaj   +1 more source

Eigenvalue Problems for Fredholm Operators with Set-Valued Perturbations

open access: yesAdvanced Nonlinear Studies, 2020
By means of a suitable degree theory, we prove persistence of eigenvalues and eigenvectors for set-valued perturbations of a Fredholm linear operator.
Benevieri Pierluigi, Iannizzotto Antonio
doaj   +1 more source

Eigencurves of the p(·)-Biharmonic operator with a Hardy-type term

open access: yesMoroccan Journal of Pure and Applied Analysis, 2020
This paper is devoted to the study of the homogeneous Dirichlet problem for a singular nonlinear equation which involves the p(·)-biharmonic operator and a Hardy-type term that depend on the solution and with a parameter λ.
Laghzal Mohamed   +3 more
doaj   +1 more source

Simple study designs in ecology produce inaccurate estimates of biodiversity responses

open access: yesJournal of Applied Ecology, Volume 56, Issue 12, Page 2742-2754, December 2019., 2019
We suggest that more investment in more robust designs is needed in ecology since inferences from simpler designs, even with large sample sizes may be misleading. Facilitating this requires longer‐term funding and stronger research–practice partnerships. We also propose ‘accuracy weights’ and demonstrate how they can weight studies in three recent meta‐
Alec P. Christie   +6 more
wiley   +1 more source

On the discreteness of the spectra of the Dirichlet and Neumann p‐biharmonic problems

open access: yesAbstract and Applied Analysis, Volume 2004, Issue 9, Page 777-792, 2004., 2004
We are interested in a nonlinear boundary value problem for (|u″|p−2u″)′​′=λ|u|p−2u in [0, 1], p > 1, with Dirichlet and Neumann boundary conditions. We prove that eigenvalues of the Dirichlet problem are positive, simple, and isolated, and form an increasing unbounded sequence. An eigenfunction, corresponding to the nth eigenvalue, has precisely n − 1
Jiří Benedikt
wiley   +1 more source

Eigenvalues for a class of singular problems involving p(x)-Biharmonic operator and q(x)-Hardy potential

open access: yesAdvances in Nonlinear Analysis, 2019
In this paper, we consider the nonlinear eigenvalue problem:
Khalil Abdelouahed El   +3 more
doaj   +1 more source

A-priori bounds and existence for solutions of weighted elliptic equations with a convection term

open access: yesAdvances in Nonlinear Analysis, 2017
We investigate weighted elliptic equations containing a convection term with variable exponents that are subject to Dirichlet or Neumann boundary condition.
Ho Ky, Sim Inbo
doaj   +1 more source

Double phase anisotropic variational problems involving critical growth

open access: yesAdvances in Nonlinear Analysis
In this study, we investigate some existence results for double phase anisotropic variational problems involving critical growth. We first establish a Lions-type concentration-compactness principle and its variant at infinity for the solution space ...
Ho Ky, Kim Yun-Ho, Zhang Chao
doaj   +1 more source

Existence and stability of solution for time-delayed nonlinear fractional differential equations

open access: yesApplied Mathematics in Science and Engineering
The objective of this study is to analyze the existence and stability of solutions for a mathematical model of nonlinear systems of time-delayed fractional differential equations involving Atangana-Baleanu-Caputo ([Formula: see text]) fractional ...
Shiferaw Geremew Kebede   +1 more
doaj   +1 more source

Existence and multiplicity of solutions for a new p(x)-Kirchhoff equation

open access: yesAdvances in Nonlinear Analysis
This article is devoted to study a class of new p(x)p\left(x)-Kirchhoff equation. By means of perturbation technique, variational method, and the method invariant sets for the descending flow, the existence and multiplicity of solutions to this problem ...
Chu Changmu, Liu Jiaquan
doaj   +1 more source

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