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Exclusion of boundary branch points for minimal surfaces

  • Matthias Bergner and Ruben Jakob
Published/Copyright: April 11, 2011
Analysis
From the journal Volume 31 Issue 2

Abstract

In the present paper we prove two different theorems to exclude boundary branch points for minimal surfaces X in ℝn. The statements roughly read as follows: A minimal surface X has no branch points on the boundary ∂Ω,

(1) if for any P ∈ X(∂Ω) there exists some strictly two-convexC2-subdomain U = U (P) ⊂ ℝn whose boundary ∂U contains P and such that X(Ω) ⊂ U;

(2) or if for each point P ∈ X(∂Ω) there exists some strictly two-convex C2-subdomain U = U (P) ⊂ ℝn with P ∈ ∂U, X(∂Ω) ⊂ U and such that ℝn ∖ U can be foliated by the boundaries of a family of strictly two-convex C2-subdomains of ℝn;

(3) and in particular if X maps ∂Ω into the boundary of some strictly two-convex, star-shaped C2-subdomain of n.


* Correspondence address: Universität Duisburg-Essen, FB Mathematik, 47048 Duisburg, Deutschland,

Published Online: 2011-04-11
Published in Print: 2011-04

© by Oldenbourg Wissenschaftsverlag, Duisburg, Germany

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