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A Nonlinear Elliptic PDE with Two Sobolev-Hardy Critical Exponents

By YanYan Li and Chang-Shou Lin

Abstract

In this paper, we consider the following PDE involving two Sobolev-Hardy critical exponents, \label{0.1} {& \Delta u + \lambda\frac{u^{2^*(s_1)-1}}{|x|^{s_1}} + \frac{u^{2^*(s_2)-1}}{|x|^{s_2}} =0 \text{in} \Omega, & u=0 \qquad \text{on} \Omega, where $0 \le s_2 < s_1 \le 2$, $0 \ne \lambda \in \Bbb R$ and $0 \in \partial \Omega$. The existence (or nonexistence) for least-energy solutions has been extensively studied when $s_1=0$ or $s_2=0$. In this paper, we prove that if $0< s_2 < s_1 <2$ and the mean curvature of $\partial \Omega$ at 0 $H(0)<0$, then \eqref{0.1} has a least-energy solution. Therefore, this paper has completed the study of \eqref{0.1} for the least-energy solutions. We also prove existence or nonexistence of positive entire solutions of \eqref{0.1} with $\Omega =\rn$ under different situations of $s_1, s_2$ and $\lambda$

Topics: Mathematics - Analysis of PDEs, 35J60
Year: 2011
DOI identifier: 10.1007/s00205-011-0467-2
OAI identifier: oai:arXiv.org:1102.4134
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