Calculus of Variations and Geometric Measure Theory
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Smooth Reifenberg theorems for sets and measures

Silvia Ghinassi

created by gelli on 11 Jun 2019
modified on 17 Jun 2019

19 jun 2019 -- 17:00   [open in google calendar]

Sala Riunioni (Dipartimento di Matematica di Pisa)

Abstract.

We provide geometric sufficient conditions for one-sided Reifenberg flat sets of any integer dimension in Euclidean space to be parametrized by a Lipschitz map with Hölder derivatives. The conditions use a Jones type square function and all statements are quantitative in that the Hölder and Lipschitz constants of the parametrizations depend on such a function. We use these results to prove sufficient conditions for higher order rectifiability of sets and measures. Key tools for the proof come from Guy David and Tatiana Toro’s parametrization of Reifenberg flat sets (with holes) in the Hölder and Lipschitz categories.

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