arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.02074math.AP
收藏

具有平方反比势的Lane-Emden方程组的正上解

Positive supersolutions for the Lane-Emden system with inverse-square potentials

Huyuan Chen, Vicentiu D. Radulescu, Binlin Zhang

摘要:

本文研究了具有反平方势的Lane-Emden方程组\begin{equation}\label{0} \left\{ \begin{array}{lll} -Δu+\frac{μ_1}{|x|^2} u= v^p \quad {\rm in}\ \, Ω\setminus\{0\},\\[2mm] -Δv+\frac{μ_2}{|x|^2} v= u^q \quad {\rm in}\ \, Ω\setminus\{0\} \end{array} \right. \end{equation}对于适当的$p,q>0$,$μ_1,μ_2\geq -(N-2)^2/4$的正上解的不存在性,其中$Ω$是一个光滑的有界区域,包含$\mathbb{R}^N$中的原点,且具有$N\geq 3$ .准确地说,我们给出了在$-(N-2)^2/4\leq μ_1,μ_2<0$和$-(N-2)^2/4\leq μ_1<0\leq μ_2$情形下系统(\ref{0})不存在正上解的$(p,q)$的尖锐超临界区域.由于反平方势的负系数$μ_1,μ_2$,可以导出原点处的初始爆破,并且在超临界情况下可以应用迭代过程来提高爆破速率,直到非线性在某些加权$L^1$空间中不被允许。在次临界情形下,利用特定的径向对称函数证明了系统(\ref{s 1.1})正上解的存在性。

英文摘要:

In this paper, we study the nonexistence of positive supersolutions for the following Lane-Emden system with inverse-square potentials \begin{equation}\label{0} \left\{ \begin{array}{lll} -Δu+\frac{μ_1}{|x|^2} u= v^p \quad {\rm in}\ \, Ω\setminus\{0\},\\[2mm] -Δv+\frac{μ_2}{|x|^2} v= u^q \quad {\rm in}\ \, Ω\setminus\{0\} \end{array} \right. \end{equation} for suitable $p,q>0$, $μ_1,μ_2\geq -(N-2)^2/4$, where $Ω$ is a smooth bounded domain containing the origin in $\mathbb{R}^N$ with $N\geq 3$. Precisely, we provide sharp supercritical regions of $(p,q)$ for the nonexistence of positive supersolutions to system (\ref{0}) in the cases $-(N-2)^2/4\leq μ_1,μ_2<0$ and $-(N-2)^2/4\leq μ_1<0\leq μ_2$. Due to the negative coefficients $μ_1,μ_2$ of the inverse-square potentials, an initial blowing-up at the origin could be derived and an iteration procedure could be applied in the supercritical case to improve the blowing-up rate until the nonlinearities are not admissible in some weighted $L^1$ spaces. In the subcritical case, we prove the existence of positive supersolutions for system (\ref{s 1.1}) by specific radially symmetric functions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑