Results 1 to 10 of about 8,805 (153)

Infinitely many homoclinic solutions for a class of nonlinear difference equations [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
By using the Symmetric Mountain Pass Theorem, we establish some existence criteria to guarantee a class of nonlinear difference equation has infinitely many homoclinic orbits. Our conditions on the nonlinear term are rather relaxed and we generalize some
Peng Chen, Zhengmei Wang
doaj   +4 more sources

Multiple solutions for a quasilinear Choquard equation with critical nonlinearity

open access: yesOpen Mathematics, 2021
In the present work, we are concerned with the multiple solutions for quasilinear Choquard equation with critical nonlinearity in RN{{\mathbb{R}}}^{N}.
Li Rui, Song Yueqiang
doaj   +1 more source

GENERAL QUASILINEAR PROBLEMS INVOLVING \(p(x)\)-LAPLACIAN WITH ROBIN BOUNDARY CONDITION

open access: yesUral Mathematical Journal, 2020
This paper deals with the existence and multiplicity of solutions for a class of quasilinear problems involving \(p(x)\)-Laplace type equation, namely $$ \left\{\begin{array}{lll} -\mathrm{div}\, (a(| \nabla u|^{p(x)})| \nabla u|^{p(x)-2} \nabla u ...
Hassan Belaouidel   +2 more
doaj   +1 more source

Existence and multiplicity of nontrivial solutions for poly-Laplacian systems on finite graphs

open access: yesBoundary Value Problems, 2022
In this paper, we investigate the existence and multiplicity of nontrivial solutions for poly-Laplacian system on a finite graph G = ( V , E ) $G=(V, E)$ , which is a generalization of the Yamabe equation on a finite graph.
Xuechen Zhang   +3 more
doaj   +1 more source

Infinitely many solutions for the discrete Schrödinger equations with a nonlocal term

open access: yesBoundary Value Problems, 2022
In the present paper, we consider the following discrete Schrödinger equations − ( a + b ∑ k ∈ Z | Δ u k − 1 | 2 ) Δ 2 u k − 1 + V k u k = f k ( u k ) k ∈ Z , $$ - \biggl(a+b\sum_{k\in \mathbf{Z}} \vert \Delta u_{k-1} \vert ^{2} \biggr) \Delta ^{2} u_{k ...
Qilin Xie, Huafeng Xiao
doaj   +1 more source

Local minimizers in spaces of symmetric functions and applications [PDF]

open access: yes, 2014
We study $H^1$ versus $C^1$ local minimizers for functionals defined on spaces of symmetric functions, namely functions that are invariant by the action of some subgroups of $\mathcal{O}(N)$.
Dos Santos   +3 more
core   +1 more source

Infinitely homoclinic solutions in discrete hamiltonian systems without coercive conditions

open access: yesJournal of Numerical Analysis and Approximation Theory, 2020
In this paper, we investigate the existence of infinitely many solutions for the second-order self-adjoint discrete Hamiltonian system $$ \Delta\left[p(n)\Delta u(n-1)\right]-L(n)u(n)+\nabla W(n,u(n))=0, \tag{*} $$ where \(n\in\mathbb{Z}, u\in\mathbb{R}^
Fathi Khelifi
doaj   +7 more sources

Multiple normalized solutions for quasi-linear Schr\"odinger equations [PDF]

open access: yes, 2015
In this paper we prove the existence of two solutions having a prescribed $L^2$-norm for a quasi-linear Schr\"odinger equation. One of these solutions is a mountain pass solution relative to a constraint and the other one a minimum either local or global.
Jeanjean, Louis   +2 more
core   +4 more sources

Existence and Multiplicity of Fast Homoclinic Solutions for a Class of Damped Vibration Problems with Impulsive Effects

open access: yesAbstract and Applied Analysis, 2014
This paper is concerned with the existence and multiplicity of fast homoclinic solutions for a class of damped vibration problems with impulsive effects.
Qiongfen Zhang
doaj   +1 more source

Existence and Multiplicity of Solutions for a Bi-Non-Local Problem

open access: yesMathematics, 2022
The aim of this paper is to investigate the existence and multiplicity of solutions for a bi-non-local problem. Precisely, we show that the above problem admits at least a non-trivial positive energy solution by using the mountain pass theorem ...
Jiabin Zuo   +3 more
doaj   +1 more source

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