A fractional De Giorgi isoperimetric type inequality
Analysis of PDEs
2026-04-20 v1
Abstract
We establish an isoperimetric type inequality for the level sets of functions in fractional Sobolev spaces. This answers a question posed by the first author in a previous paper. To obtain it, we work out a slight modification of some estimates for nonlocal interaction functionals established by Savin and Valdinoci. We also show how said isoperimetric inequality leads to the H\"older continuity of functions in (weak) fractional De Giorgi classes.
Keywords
Cite
@article{arxiv.2604.16103,
title = {A fractional De Giorgi isoperimetric type inequality},
author = {Matteo Cozzi and Tomás Sanz-Perela},
journal= {arXiv preprint arXiv:2604.16103},
year = {2026}
}