Calculus of Variations and Geometric Measure Theory
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L. Ambrosio - N. Fusco - D. Pallara

Higher Regularity of Solutions of Free Discontinuity Problems

created on 01 Apr 1996
modified by pallara on 23 Jun 2012

[BibTeX]

Published Paper

Inserted: 1 apr 1996
Last Updated: 23 jun 2012

Journal: Diff. Int. Eqs.
Year: 1999

Abstract:

In this paper we continue the analysis, started in 1 and 2 of the regularity of solutions of free discontinuity problems. We choose as a model problem the minimization of the Mumford-Shah functional. Assuming that in some region the optimal discontinuity set $\Gamma$ is the graph of a $C^{1,\rho}$ function, we look for conditions ensuring the higher regularity of $\Gamma$. Our results are optimal in the two dimensional case. As an application, we prove that in the case of the Mumford-Shah functional and in similar problems the Lavrentiev phenomenon does not occur.


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