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arXiv 1605.03357math.AP
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Lane-Emden问题径向解的Morse指数公式

A Morse index formula for radial solutions of Lane-Emden problems

Francesca De Marchis, Isabella Ianni, Filomena Pacella

摘要:

考虑半线性Lane-Emden问题:\begin{equation}\label{problemAbstract}\left\{\begin{array}{lr}-Δu= |u|^{p-1}u\qquad \mbox{ in }B u=0\qquad\qquad\qquad\mbox{ on }\partial B \end{array}\right.\tag{$\mathcal E_p$} \end{equation}其中$B$是以原点为中心的$\mathbb R^N$,$N\geq3$和$1<p<p_S$,$p_S=\frac{N+2}{N-2}$的单位球.本文证明了对于具有$m$节点域的\eqref{problemAbstract}的任意径向解$u_p$,若$p$充分接近于$p_S$,则其Morse指标$\mathsf{m}(u_p)$由公式\[\mathsf{m}(u_p)=m+N(m-1)\]给出.

英文摘要:

We consider the semilinear Lane-Emden problem: \begin{equation}\label{problemAbstract}\left\{\begin{array}{lr}-Δu= |u|^{p-1}u\qquad \mbox{ in }B u=0\qquad\qquad\qquad\mbox{ on }\partial B \end{array}\right.\tag{$\mathcal E_p$} \end{equation} where $B$ is the unit ball of $\mathbb R^N$, $N\geq3$, centered at the origin and $1<p<p_S$, $p_S=\frac{N+2}{N-2}$. We prove that for any radial solution $u_p$ of \eqref{problemAbstract} with $m$ nodal domains its Morse index $\mathsf{m}(u_p)$ is given by the formula \[\mathsf{m}(u_p)=m+N(m-1)\] if $p$ is sufficiently close to $p_S$.

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。

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