Results 41 to 50 of about 2,242 (124)

On existence and phase separation of solitary waves for nonlinear Schr\"odinger systems modelling simultaneous cooperation and competition

open access: yes, 2014
We study the existence of positive bound states for the nonlinear elliptic system \[ \begin{cases} - \Delta u_i + \lambda_i u_i = \sum_{j=1}^d \beta_{ij} u_j^2 u_i & \text{in $\Omega$} \\ u_1 =\cdots = u_d=0 & \text{on $\partial \Omega$}, \end{cases ...
Soave, Nicola
core   +1 more source

Existence, Decay, and Blow‐up of Solutions for a Weighted m‐Biharmonic Equation with Nonlinear Damping and Source Terms

open access: yesJournal of Function Spaces, Volume 2024, Issue 1, 2024.
In this paper, we consider the weighted m‐biharmonic equation with nonlinear damping and source terms. We proved the global existence of solutions. Later, the decay of the energy is established by using Nakao’s inequality. Finally, we proved the blow‐up of solutions in finite time.
Ayşe Fidan   +3 more
wiley   +1 more source

Existence and Multiplicity of Positive Solutions for Schrödinger-Kirchhoff-Poisson System with Singularity

open access: yesJournal of Function Spaces, 2017
We study a singular Schrödinger-Kirchhoff-Poisson system by the variational methods and the Nehari manifold and we prove the existence, uniqueness, and multiplicity of positive solutions of the problem under different conditions.
Mengjun Mu, Huiqin Lu
doaj   +1 more source

Multiplicity of Solutions for a Class of Kirchhoff–Poisson Type Problem

open access: yesAbstract and Applied Analysis, Volume 2024, Issue 1, 2024.
In this paper, we use the fountain theorems to investigate a class of nonlinear Kirchhoff–Poisson type problem. When the nonlinearity f satisfies the Ambrosetti–Rabinowitz’s 4‐superlinearity condition, or under some weaker superlinearity condition, we establish two theorems concerning with the existence of infinitely many solutions.
Ziqi Deng   +2 more
wiley   +1 more source

Multiplicity Results for a Class of Kirchhoff-Schrödinger-Poisson System Involving Sign-Changing Weight Functions

open access: yesJournal of Function Spaces, 2019
This paper deals with the Kirchhoff-Schrödinger-Poisson system involving sign-changing weight functions. We prove the existence and multiplicity of solutions to the system. Our main results are based on the method of Nehari manifold.
Dandan Yang, Chuanzhi Bai
doaj   +1 more source

Vortex ground states for Klein-Gordon-Maxwell-Proca type systems

open access: yes, 2016
We look for three dimensional vortex-solutions, which have finite energy and are stationary solutions, of Klein-Gordon-Maxwell-Proca type systems of equations.
d'Avenia, Pietro   +2 more
core   +1 more source

Existence of Multiple High‐Energy Solutions for a Kind of Superlinear Second‐Order Elliptic Equations

open access: yesJournal of Mathematics, Volume 2024, Issue 1, 2024.
In this paper, we intend to consider infinitely many high energy solutions for a kind of superlinear Klein–Gordon–Maxwell systems. Under some suitable assumptions on the potential function and nonlinearity, by using variational methods and the method of Nehari manifold, we obtain the existence result of infinitely many high energy solutions for this ...
Fangfang Huang   +2 more
wiley   +1 more source

Multiple positive solutions to the fractional Kirchhoff problem with critical indefinite nonlinearities

open access: yesElectronic Journal of Differential Equations, 2020
This article concerns the existence and multiplicity of positive solutions to the fractional Kirchhoff equation with critical indefinite nonlinearities by applying the Nehari manifold approach and fibering maps.
Jie Yang, Haibo Chen, Zhaosheng Feng
doaj  

Blowup and Global Solutions of a Fourth‐Order Parabolic Equation With Variable Exponent Logarithmic Nonlinearity

open access: yesJournal of Function Spaces, Volume 2024, Issue 1, 2024.
In this work, we deal with a fourth‐order parabolic equation with variable exponent logarithmic nonlinearity. We obtain the global existence and blowup solutions using the energy functional and potential well method.
Gülistan Butakın   +3 more
wiley   +1 more source

Nonlocal problems at critical growth in contractible domains

open access: yes, 2015
We prove the existence of a positive solution for nonlocal problems involving the fractional Laplacian and a critical growth power nonlinearity when the equation is set in a suitable contractible domain.Comment: 17 ...
Mosconi, Sunra   +2 more
core   +1 more source

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