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A geometric approach to the topological disk theorem of Reifenberg
Journal article   Open access  Peer reviewed

A geometric approach to the topological disk theorem of Reifenberg

Guanghao Hong and Lihe Wang
Pacific journal of mathematics, Vol.233(2), pp.321-339
12/01/2007
DOI: 10.2140/pjm.2007.233.321
url
https://doi.org/10.2140/pjm.2007.233.321View
Published (Version of record) Open Access

Abstract

Abstract We offer a new approach to the classical topological disk theorem of Reifenberg in the codimension-1 case. Our proof, using 1 2-level sets of the smoothing of the characteristic function of the domain Ω as approximating surfaces of ∂Ω, is much simpler than Reifenberg’s original one (1960). We also extend the result to parabolic space.

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