arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1508.04993math.AP
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非光滑区域上的高阶椭圆型方程:历史与最新结果

Higher-order elliptic equations in non-smooth domains: history and recent results

Ariel Barton, Svitlana Mayboroda

摘要:

近年来,非光滑区域上的高阶椭圆型方程理论取得了重大进展。建立了任意区域上多调和函数导数的精确点态估计,并给出了高阶Wiener检验。研究了一类高阶变系数非光滑算子的边值问题,包括散度型和复合型两种形式,其中复合型适用于Lipschitz域.这些发展带来了新的估计的基本解和格林函数,允许缺乏光滑的边界或系数的方程。基于我们对该主题历史的早期描述,本次调查介绍了当前的技术状态,强调了最近的结果和新出现的开放问题。

英文摘要:

Recent years have brought significant advances in the theory of higher order elliptic equations in non-smooth domains. Sharp pointwise estimates on derivatives of polyharmonic functions in arbitrary domains were established, followed by the higher order Wiener test. Certain boundary value problems for higher order operators with variable non-smooth coefficients were addressed, both in divergence form and in composition form, the latter being adapted to the context of Lipschitz domains. These developments brought new estimates on the fundamental solutions and the Green function, allowing for the lack of smoothness of the boundary or of the coefficients of the equation. Building on our earlier account of history of the subject, this survey presents the current state of the art, emphasizing the most recent results and emerging open problems.

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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