arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2301.09779math.AP
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完全非线性分数次算子的大调和函数

Large harmonic functions for fully nonlinear fractional operators

Gonzalo Dávila, Alexander Quaas, Erwin Topp

摘要:

研究了有界光滑区域$Ω\subset \mathbb R^N$上分数阶调和函数解的存在性、唯一性和边界爆破轮廓。我们处理调和函数与一致椭圆,完全非线性非局部算子,包括线性情况$$ (-Δ)^s u = 0 \quad \mbox{in} \ Ω, $$,其中$(-Δ)^s$表示分数拉普拉斯阶$2s \in (0,2)$。利用粘性解理论和Perron方法构造了$\bar Ω^c$中具有零外部条件的调和函数,并对任意给定的边界数据$h \in C(\partial Ω)$构造了边界爆破剖面$$ \lim_{x\to x_0, x \in Ω}\mathrm{dist}(x, \partial Ω)^{1-s}u(x)=h(x_0), \quad \mbox{for all} \quad x_0\in \partial Ω, $$.我们的方法使我们能够提供爆破率的解决方案和它的梯度估计。即使在线性情况下,结果也是新的。

英文摘要:

We study existence, uniqueness and boundary blow-up profile for fractional harmonic functions on a bounded smooth domain $Ω\subset \mathbb R^N$. We deal with harmonic functions associated to uniformly elliptic, fully nonlinear nonlocal operators, including the linear case $$ (-Δ)^s u = 0 \quad \mbox{in} \ Ω, $$ where $(-Δ)^s$ denotes the fractional Laplacian of order $2s \in (0,2)$. We use the viscosity solution's theory and Perron's method to construct harmonic functions with zero exterior condition in $\bar Ω^c$, and boundary blow-up profile $$ \lim_{x\to x_0, x \in Ω}\mathrm{dist}(x, \partial Ω)^{1-s}u(x)=h(x_0), \quad \mbox{for all} \quad x_0\in \partial Ω, $$ for any given boundary data $h \in C(\partial Ω)$. Our method allows us to provide blow-up rate for the solution and its gradient estimates. Results are new even in the linear case.

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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