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arXiv 1407.3572math.AP
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具Hardy位势的半线性椭圆型方程的适度解

Moderate solutions of semilinear elliptic equations with Hardy potential

Moshe Marcus, Phuoc-Tai Nguyen

摘要:

设$Ω$是$\mathbb{R}^N$中的有界光滑域.研究了方程(E)$-L_μu+ u^q = 0$在$Ω$中的正解,其中$L_μ=Δ+ \fracμ{δ^2}$,$0<μ$,$q>1$和$δ(x)=\mathrm{dist}\,(x,\partialΩ)$ .若方程(E)的正解被PDMATHAMT-调和函数支配,则它是适度的.如果$μ<C_H(Ω)$($Ω$的Hardy常数),则每个正的$L_μ$ -调和函数都可以通过Martin表示定理表示为$\partialΩ$上的有限测度.然而,任何此类解的经典测度边界迹都为零。本文引入了规范边界迹的概念,利用它得到了次临界情形下(E)的正适度解$1<q<q_{μ,c}$的完全分类. (The临界值仅取决于$N$和$μ$。)对于$q\geq q_{μ,c}$,不存在边界上具有孤立奇点的适度解。对线性算子$L_μ$的正规化边界迹和相应的边值问题也作了详细的讨论。这些结果构成了研究非线性问题的基础。

英文摘要:

Let $Ω$ be a bounded smooth domain in $\mathbb{R}^N$. We study positive solutions of equation (E) $-L_μu+ u^q = 0$ in $Ω$ where $L_μ=Δ+ \fracμ{δ^2}$, $0<μ$, $q>1$ and $δ(x)=\mathrm{dist}\,(x,\partialΩ)$. A positive solution of (E) is moderate if it is dominated by an $L_μ$-harmonic function. If $μ<C_H(Ω)$ (the Hardy constant for $Ω$) every positive $L_μ$- harmonic functions can be represented in terms of a finite measure on $\partialΩ$ via the Martin representation theorem. However the classical measure boundary trace of any such solution is zero. We introduce a notion of normalized boundary trace by which we obtain a complete classification of the positive moderate solutions of (E) in the subcritical case, $1<q<q_{μ,c}$. (The critical value depends only on $N$ and $μ$.) For $q\geq q_{μ,c}$ there exists no moderate solution with an isolated singularity on the boundary. The normalized boundary trace and associated boundary value problems are also discussed in detail for the linear operator $L_μ$. These results form the basis for the study of the nonlinear problem.

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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