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Reifenberg parameterizations for sets with holes

About this Title

Guy David, Mathématiques, Bâtiment 425, Université de Paris-Sud 11, 91405 Orsay Cedex, France and Tatiana Toro, University of Washington, Department of Mathematics, Box 354350, Seattle, WA 98195–4350

Publication: Memoirs of the American Mathematical Society
Publication Year: 2012; Volume 215, Number 1012
ISBNs: 978-0-8218-5310-8 (print); 978-0-8218-8517-8 (online)
DOI: https://doi.org/10.1090/S0065-9266-2011-00629-5
Published electronically: April 13, 2011
Keywords: Reifenberg, topological disk, bi-Lipschitz parameterizations.
MSC: Primary 28A75, 49Q05; Secondary 49Q20, 49K99

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Table of Contents

Chapters

  • 1. Introduction
  • 2. Coherent families of balls and planes
  • 3. A partition of unity
  • 4. Definition of a mapping $f$ on $\Sigma _0$
  • 5. Local Lipschitz graph descriptions of the $\Sigma _k$
  • 6. Reifenberg-flatness of the image
  • 7. Distortion estimates for $D\sigma _k$
  • 8. Hölder and Lipschitz properties of $f$ on $\Sigma _0$
  • 9. $C^2$-regularity of the $\Sigma _k$ and fields of linear isometries defined on $\Sigma _0$
  • 10. The definition of $g$ on the whole $\mathbb R^n$
  • 11. Hölder and Lipschitz properties of $g$ on $\mathbb R^n$
  • 12. Variants of the Reifenberg theorem
  • 13. Local lower-Ahlfors regularity and a better sufficient bi-Lipschitz condition
  • 14. Big pieces of bi-Lipschitz images and approximation by bi-Lipschitz domains
  • 15. Uniform rectifiability and Ahlfors-regular Reifenberg-flat sets

Abstract

We extend the proof of Reifenberg’s Topological Disk Theorem to allow the case of sets with holes, and give sufficient conditions on a set $E$ for the existence of a bi-Lipschitz parameterization of $E$ by a $d$-dimensional plane or smooth manifold. Such a condition is expressed in terms of square summability for the P. Jones numbers $\beta _1(x,r)$. In particular, it applies in the locally Ahlfors-regular case to provide very big pieces of bi-Lipschitz images of $\mathbb R^d$.

Résumé. On généralise la démonstration du théorème du disque topologique de Reifenberg pour inclure le cas d’ensembles ayant des trous, et on donne des conditions suffisantes sur l’ensemble $E$ pour l’existence de paramétrage de $E$ par un plan affine ou une variété de dimension $d$. L’une de ces conditions porte sur la sommabilité des carrés des nombres de P. Jones $\beta _1(x,r)$, et s’applique en particulier aux ensembles localement Ahlfors-réguliers et à l’existence de très grand morceaux d’images bi-Lipschitziennes de $\mathbb R^d$.

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