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Publication 04-CNA-20

On optimal regularity of free boundary problems and a conjecture of De Giorgi

Herbert Koch
Fachbereich Mathematik
Universität Dortmund
Dortmund, Germany

Giovanni Leoni
Department of Mathematical Sciences
Carnegie Mellon University

and

Massimiliano Morini
SISSA/ISAS
via Beirut 4
340 14 Trieste ITALY

Abstract: We present a general theory to study optimal regularity for a large class of nonlinear elliptic systems satisfying general boundary conditions and in the presence of a geometric transmission condition on the free-boundary. As an application we give a full positive answer to a conjecture of De Giorgi on the analyticity of local minimizers of the Mumford-Shah functional.

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