Multiplicity of solutions for homogeneous elliptic systems with critical growth

Details Multiplicity of solutions for homogeneous elliptic systems with critical growth Multiplicity of solutions for homogeneous elliptic systems with critical growth

2010-11-22

arxiv.org/abs/1011.4774v1

Mathematics

Analysis of PDEs

Scientific paper

In this paper we are concerned with the number of nonnegative solutions of the elliptic system $$ {array}{ll} -\Delta u = Q_u(u,v) + 1/2{2^*} H_u(u,v),& {in} \Omega,\vdois\ -\Delta v = Q_v(u,v) + 1/{2^*} H_v(u,v),& {in} \Omega,\vdois\ u=v=0,& {on} \partial\Omega. \leqno{(P)} $$ where $\Omega \subset \mathbb{R}^N$ is a bounded smooth domain, $N \geq 3$, $2^*:=2N/(N-2)$ and $Q_u, H_u$ and $Q_v$, $H_v$ are the partial derivatives of the homogeneous functions $Q,\,H \in C^1(\mathbb{R}^2_+,\mathbb{R})$, where $ \mathbb{R}^2_+ := [0,\infty) \times [0,\infty)$. In the proofs we apply variational methods and Ljusternik-Schnirelmann theory.

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