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arXiv 2308.01697math.AP
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非局部极小曲面的严格最大值原理

A strict maximum principle for nonlocal minimal surfaces

Serena Dipierro, Ovidiu Savin, Enrico Valdinoci

AI总结:

本文在分数极小曲面框架下证明严格最大值原理:含公共边界点的包含关系非局部极小集必重合,通过 blow-up 分析、定制正则性理论及最新 Harnack 不等式解决不规则接触与余项分析难题。

摘要:

在分数极小曲面的框架下,我们证明:若两个非局部极小集满足一个包含于另一个且共享一个公共边界点,则它们必然重合。该严格最大值原理并非显而易见,因为曲面可能在不规则点处接触,因此需将合适的 blow-up 分析与定制的正则性理论相结合以得到此结果。在经典情形中,Leon Simon 曾证明过类似结果。我们的证明还依赖于 Xavier Cabré 和 Matteo Cozzi 最近提出的非局部极小曲面 Harnack 不等式,该不等式可视为 Enrico Bombieri 和 Enrico Giusti 经典结果的分数对应版本。在我们的框架下,额外的困难来自对超曲面上相应非局部积分方程的分析,该方程存在一个余项,其符号和精细性质需被仔细处理。

英文摘要:

In the setting of fractional minimal surfaces, we prove that if two nonlocal minimal sets are one included in the other and share a common boundary point, then they must necessarily coincide. This strict maximum principle is not obvious, since the surfaces may touch at an irregular point, therefore a suitable blow-up analysis must be combined with a bespoke regularity theory to obtain this result. For the classical case, an analogous result was proved by Leon Simon. Our proof also relies on a Harnack Inequality for nonlocal minimal surfaces that has been recently introduced by Xavier Cabré and Matteo Cozzi and which can be seen as a fractional counterpart of a classical result by Enrico Bombieri and Enrico Giusti. In our setting, an additional difficulty comes from the analysis of the corresponding nonlocal integral equation on a hypersurface, which presents a remainder whose sign and fine properties need to be carefully addressed.

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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