SYMMETRY AND QUANTITATIVE STABILITY FOR THE PARALLEL SURFACE FRACTIONAL TORSION PROBLEM

被引：11

作者：

Ciraolo, Giulio ^{[1
]}

Dipierro, Serena ^{[2
]}

Poggesi, Giorgio ^{[2
]}

Pollastro, Luigi ^{[1
]}

Valdinoci, Enrico ^{[1
,2
]}

机构：

[1] Univ Milan, Dept Matemat, Via Cesare Saldini 50, I-20133 Milan, Italy

[2] Univ Western Australia, Dept Math & Stat, 35 Stirling Highway, Perth, WA 6009, Australia

来源：

TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY | 2023年 / 376卷 / 05期

基金：

澳大利亚研究理事会;

关键词：

SERRINS;

D O I：

10.1090/tran/8837

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

We study symmetry and quantitative approximate symmetry for an overdetermined problem involving the fractional torsion problem in a bounded open set ohm subset of R n . More precisely, we prove that if the fractional torsion function has a C 1 level surface which is parallel to the boundary partial differential ohm then ohm is a ball. If instead we assume that the solution is close to a constant on a parallel surface to the boundary, then we quantitatively prove that ohm is close to a ball. Our results use techniques which are peculiar of the nonlocal case as, for instance, quantitative versions of fractional Hopf boundary point lemma and boundary Harnack estimates for antisymmetric functions. We also provide an application to the study of rural-urban fringes in population settlements.

引用

页码：3515 / 3540

页数：26