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arXiv 2109.07085math.AP
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分数阶Lane-Emden方程在Serrin临界情形下的孤立奇点

On isolated singularities for fractional Lane-Emden equation in the Serrin's critical case

Huyuan Chen, Hichem Hajaiej

摘要:

在本文中,我们解决了分数莱恩-埃姆登方程的Serrin的临界情况下,分数拉普拉斯算子通过开发一个创新的和独立的方法,也适用于经典的设置(拉普拉斯算子)。给出了半线性分数阶椭圆型方程$$(E) \qquad\qquad (-Δ)^s u = u^{\frac{N}{N-2s}}\quad {\rm in}\ \ Ω\setminus\{0\},\qquad u\geq 0\quad{\rm in}\ \ \mathbb{R}^N\setminusΩ,\qquad\qquad\quad $$正解的孤立奇点的分类,其中$s\in(0,1)$,$Ω$是$\mathbb{R}^N$中包含原点的有界区域,$N>2s$,$\frac{N}{N-2s}$是Serrin临界指数.我们使用一个初始的渐近无穷大的临界情况下转换成一个亚临界的情况下,基本方程涉及的分数Hardy算子。奇异解的构造是基于某些特殊函数是原问题在原点附近的子解这一事实。我们还对$(E)$的解的不可可去奇点进行了分类,并证明了一系列孤立奇异解的存在性,这些孤立奇异解的二阶爆破项的系数为参数。据我们所知,这一想法也首次用于这项工作。

英文摘要:

In this paper, we solve the fractional Lane-Emden equation in the Serrin's critical case for the fractional Laplacian by developing an innovative and self-contained approach that also applies to the classical setting ( Laplacian). We give a classification of the isolated singularities of positive solutions to the semilinear fractional elliptic equations $$(E) \qquad\qquad (-Δ)^s u = u^{\frac{N}{N-2s}}\quad {\rm in}\ \ Ω\setminus\{0\},\qquad u\geq 0\quad{\rm in}\ \ \mathbb{R}^N\setminusΩ,\qquad\qquad\quad $$ where $s\in(0,1)$, $Ω$ is a bounded domain containing the origin in $\mathbb{R}^N$ with $N>2s$ and $\frac{N}{N-2s}$ is the Serrin's critical exponent. We use an initial asymptotic at infinity to transform the critical case into a subcritical case where the underlying equation involves the fractional Hardy operator. The construction of singular solutions is based on the fact that some special functions are subsolutions of the original problem near the origin. We also classify the non-removable singularities of the solutions of $(E)$ and show the existence of a sequence of isolated singular solutions parameterizing the coefficients of the second order blow up term. To the best of our knowledge, this idea has also been first used in this work.

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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