A general regularity theory for stable codimension 1 integral varifolds
type: Item
instance of: scholarly article
title: A general regularity theory for stable codimension 1 integral varifolds
zbMATH Open document ID: 1307.58005
author: Neshan Wickramasekera
published in: Annals of Mathematics. Second Series
publication date: 2014-06-10T00:00:00Z
full work available at URL: https://arxiv.org/abs/0911.4883
review text: From the abstract: ''We give a necessary and sufficient geometric structural condition, which we call \(\alpha\)-Structural Hypothesis, for a stable codimension 1 integral varifold on a smooth Riemannian manifold to correspond to an embedded smooth hypersurface away from a small set of generally unavoidable singularities. The \(\alpha\)-Structural Hypothesis says that no point of the support of the varifold has a neighborhood in which the support is the union of three or more embedded \(C^{1,\alpha}\) hypersurfaces-with-boundary meeting (only) along their common boundary. We establish that whenever a stable integral \(n\)-varifold on a smooth \((n+1)\)-dimensional Riemannian manifold satisfies the \(\alpha\)-Structural Hypothesis for some \(\alpha \in (0,1/2)\), its singular set is empty if \(n \leq 6\), discrete if \(n=7\) and has Hausdorff dimension \( \leq n-7\) if \(n \geq 8\); in view of well-known examples, this is the best possible general dimension estimate on the singular set of a varifold satisfying our hypotheses. We also establish compactness of mass-bounded subsets of the class of stable codimension 1 integral varifolds satisfying the \(\alpha\)-Structural Hypothesis for some \(\alpha \in (0,1/2)\). The \(\alpha\)-Structural Hypothesis on an \(n\)-varifold for any \(\alpha \in (0,1/2)\) is readily implied by either the following two hypotheses: (i) the varifold corresponds to an absolutely area minimizing rectifiable current with no boundary, (ii) the singular set of the varifold has vanishing \((n-1)\)-dimensional Hausdorff measure. Thus, our theory subsumes the well-known regularity theory for codimension 1 area minimizing rectifiable currents and settles the long standing question as to which weakest size hypothesis on the singular set of a stable minimal hypersurface guarantees the validity of the above regularity conclusions. An optimal strong maximum principle for stationary codimension 1 integral varifolds follows from our regularity and compactn…
Mathematics Subject Classification ID: 58E05
Mathematics Subject Classification ID: 49N60
Mathematics Subject Classification ID: 49Q05
Mathematics Subject Classification ID: 49Q15
zbMATH DE Number: 6302166
zbMATH Keywords: first variation
zbMATH Keywords: minimal hypersurface
zbMATH Keywords: regularity theory
zbMATH Keywords: second variation
zbMATH Keywords: stable varifold
zbMATH Keywords: stationary varifold
MaRDI profile type: Publication
OpenAlex ID: W2141411107
arXiv ID: 0911.4883
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DOI: 10.4007/ANNALS.2014.179.3.2
description: scientific article