Results 91 to 100 of about 3,762 (154)

Multiplicity of solutions for a class of elliptic systems in $R^N$

open access: yesElectronic Journal of Differential Equations, 2006
This article concerns the multiplicity of solutions for the system of equations $$displaylines{ -Delta u + V(epsilon x)u = alpha |u|^{alpha-2}u|v|^{eta}, cr -Delta v + V(epsilon x)v = eta |u|^{alpha}|v|^{eta-2}v }$$ in $mathbb{R}^N$, where $V$ is a ...
Giovany M. Figueiredo
doaj  

Infinitely Many Solutions for Schrödinger–Poisson Systems and Schrödinger–Kirchhoff Equations

open access: yesMathematics
By applying Clark’s theorem as altered by Liu and Wang and the truncation method, we obtain a sequence of solutions for a Schrödinger–Poisson system −Δu+V(x)u+ϕu=f(u)inR3,−Δϕ=u2inR3 with negative energy.
Shibo Liu
doaj   +1 more source

Solutions to perturbed eigenvalue problems of the p-Laplacian in RN

open access: yesElectronic Journal of Differential Equations, 1997
Using a variational approach, we investigate the existence of solutions for non-autonomous perturbations of the p-Laplacian eigenvalue problem $$ -Delta _pu=f(x,u)quad { m in}quad {Bbb R}^N,. $$ Under the assumptions that the primitive $F(x,u)$ of $f(x,u)
Joao Marcos Do O
doaj  

Erratum to: "On a functional satisfying a weak Palais-Smale condition"

open access: yesDiscrete and Continuous Dynamical Systems, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Existence of solutions for p-Kirchhoff type problems with critical exponent

open access: yesElectronic Journal of Differential Equations, 2011
We study the existence of solutions for the p-Kirchhoff type problem involving the critical Sobolev exponent, $$displaylines{ -Big[gBig(int_Omega|abla u|^pdxBig)Big]Delta_pu =lambda f(x,u)+|u|^{p^star-2}uquadext{in }Omega,cr u=0quadext{on ...
Ahmed Hamydy   +2 more
doaj  

A deformation theorem in the noncompact nonsmooth setting and its applications

open access: yesElectronic Journal of Differential Equations, 2001
We build a deformation for a continuous functional defined on a Banach space and invariant with respect to an isometric action of a noncompact group. Under these assumptions the Palais-Smale condition does not hold.
Gianni Arioli
doaj  

Palais-Smale Condition, Index Pairs and Critical Point Theory

open access: yes, 2000
This paper is concerned with index pairs in the sense of Conley index theory for flows relative to pseudo-gradient vector fields for $C^1$-functions satisfying Palais-Smale condition. We prove a deformation theorem for such index pairs to obtain a Lusternik-Schnirelmann type result in Conley index theory.
openaire   +2 more sources

On the Palais-Smale condition in geometric knot theory

open access: yes
61 ...
Freches, Nicolas   +3 more
openaire   +3 more sources

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