共查询到20条相似文献,搜索用时 15 毫秒
1.
Mohamed Benrhouma Hichem Ounaies 《NoDEA : Nonlinear Differential Equations and Applications》2010,17(5):647-662
In this paper we consider the following problem $\left\{\begin{array}{l} -\Delta u=u-\left|u\right|^{-2\theta}u+f \\u \in H^1(\mathbb{R}^N)\cap L^{2(1-\theta)}(\mathbb{R}^N)\end{array}\right.$ ${f \in L^2(\mathbb{R}^N)\cap L^\frac{2(1-\theta)}{1-2\theta}(\mathbb{R}^N),\, N\geq 3,\, f\geq 0,\, f \neq 0}In this paper we consider the following problem
{l -Du=u-|u|-2qu+f u ? H1(\mathbbRN)?L2(1-q)(\mathbbRN)\left\{\begin{array}{l} -\Delta u=u-\left|u\right|^{-2\theta}u+f \\u \in H^1(\mathbb{R}^N)\cap L^{2(1-\theta)}(\mathbb{R}^N)\end{array}\right. 相似文献
2.
We give verifiable conditions ensuring that second order quasilinear elliptic equations on
have infinitely many solutions in the Sobolev space
for generic right-hand sides. This amounts to translating in concrete terms the more elusive hypotheses of an abstract theorem. Salient points include the proof that a key denseness property is equivalent to the existence of nontrivial solutions to an auxiliary problem, and an estimate of the size of the set of critical points of nonlinear Schrödinger operators. Conditions for the real-analyticity of Nemytskii operators are also discussed. 相似文献
3.
François Genoud 《Calculus of Variations and Partial Differential Equations》2010,38(1-2):207-232
The existence of a global branch of positive spherically symmetric solutions ${\{(\lambda,u(\lambda)):\lambda\in(0,\infty)\}}$ of the semilinear elliptic equation $$\Delta u - \lambda u + V(x)|u|^{p-1}u = 0 \quad \text{in}\,\mathbb{R}^N\,\text{with}\,N\geq3$$ is proved for ${1 < p < 1+\frac{4-2b}{N-2}}$ , where ${b\in(0,2)}$ is such that the radial function V vanishes at infinity like |x|?b . V is allowed to be singular at the origin but not worse than |x|?b . The mapping ${\lambda\mapsto u(\lambda)}$ is of class ${C^r((0,\infty),H^1(\mathbb{R}^N))}$ if ${V\in C^r(\mathbb{R}^N\setminus\{0\},\mathbb{R})}$ , for r = 0, 1. Further properties of regularity and decay at infinity of solutions are also established. This work is a natural continuation of previous results by Stuart and the author, concerning the existence of a local branch of solutions of the same equation for values of the bifurcation parameter λ in a right neighbourhood of λ = 0. The variational structure of the equation is deeply exploited and the global continuation is obtained via an implicit function theorem. 相似文献
4.
Boumediene Abdellaoui Veronica Felli Ireneo Peral 《Calculus of Variations and Partial Differential Equations》2009,34(1):97-137
We study the existence of different types of positive solutions to problem
5.
For a large class of functions f, we consider the nonlinear elliptic eigenvalue problem We describe the behaviour of the branch of solutions emanating from an eigenvalue of odd multiplicity below the essential spectrum of the linearized problem. A sharper result is obtained in the case of the lowest eigenvalue. The discussion is based on the degree theory for proper Fredholm maps developed by P.M Fitzpatrick, J. Pejsachowicz and P.J. Rabier. Received November 13, 1996; in final form March 24, 1997 相似文献
6.
In this note, we describe the asymptotic behavior of sequences of solutions to N-Laplace equations with critical exponential growth in smooth bounded domain in ${\mathbb{R}^N}$ . Precisely we prove multibubble phenomena and obtain an energy inequality for those concentrating solutions. In fact we partly extend the corresponding two-dimensional results of Adimurthi and Struwe (J Funct Anal 175:125?C167, 2000) and Druet (Duke Math J 132:217?C269, 2006) to high dimensional case. 相似文献
7.
8.
Roberta Di Gennaro 《Ricerche di matematica》2009,58(2):249-262
We study the Hartshorne-Rao modules M
C
of minimal curves C in
\mathbbPN{\mathbb{P}^N} , with N ≥ 4, lying in the same liaison class of curves on a smooth rational scroll surface. We get a free minimal resolution of M
C
for some of such curves and an upper bound for Betti numbers of M
C
, for any C. 相似文献
9.
10.
This paper is concerned with the semilinear elliptic problem
$$
\left\{
\begin{aligned}
&-\Delta u=\lambda h(|x|)f(u) \ \ \ \ \ \ \ \ \ \ \text{in}\ \mathbb{R}^N, \\~
& u(x)>0\hskip 3cm \ \text{in}\ \mathbb{R}^N, \\~
&u\to 0 \hskip 3cm \ \ \ \ \text{as}\ |x|\to \infty,
\end{aligned}
\right.
$$ where $\lambda$ is a real parameter and $h$ is a weight function which is positive. We show the existence of three radial positive solutions under suitable conditions on the nonlinearity. Proofs are mainly based on the bifurcation technique. 相似文献
11.
We consider the question of existence of positive solutions for a class of elliptic problems in all of having a noncoercive linear part and a sign-changing nonlinearity of the form . Received December 20, 1999 / Accepted July 17, 2000 /Published online November 9, 2000 相似文献
12.
Cung The Anh 《NoDEA : Nonlinear Differential Equations and Applications》2014,21(5):663-678
The aim of this paper is to prove the existence of the global attractor for a semilinear strongly degenerate parabolic equation on \({\mathbb{R}^N}\) with the locally Lipschitz nonlinearity satisfying a subcritical growth condition. 相似文献
13.
Boris Andreianov Mohamed Maliki 《NoDEA : Nonlinear Differential Equations and Applications》2010,17(1):109-118
We study the Cauchy problem in
\mathbbRN{\mathbb{R}^N} for the parabolic equation
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