Published Paper

Inserted: 16 mar 2021
Last Updated: 31 oct 2023

Journal: Journal European Mathematical Society
Volume: 25
Pages: 3727-3765
Year: 2023

Abstract:

We prove an Alt-Caffarelli-Friedman montonicity formula for pairs of functions solving elliptic equations driven by different ellipticity matrices in their positivity sets. As application, we derive Liouville-type theorems for subsolutions of some elliptic systems, and we analyze segregation phenomena for systems of equations where the diffusion of each density is described by a different operator.