## Journal of Differential Geometry

### Controlling area blow-up in minimal or bounded mean curvature varieties

Brian White

#### Abstract

Consider a sequence of minimal varieties $M_i$ in a Riemannian manifold $N$ such that the measures of the boundaries are uniformly bounded on compact sets. Let $Z$ be the set of points at which the areas of the $M_i$ blow up. We prove that $Z$ behaves in some ways like a minimal variety without boundary. In particular, it satisfies the same maximum and barrier principles that a smooth minimal submanifold satisfies. For suitable open subsets $W$ of $N$, this allows one to show that if the areas of the $M_i$ are uniformly bounded on compact subsets of $W$, then the areas are in fact uniformly bounded on all compact subsets of $N$. Similar results are proved for varieties with bounded mean curvature. The results about area blow-up sets are used to show that the Allard Regularity Theorems can be applied in some situations where key hypotheses appear to be missing. In particular, we prove a version of the Allard Boundary Regularity Theorem that does not require any area bounds. For example, we prove that if a sequence of smooth minimal submanifolds converge as sets to a subset of a smooth, connected, properly embedded manifold with nonempty boundary, and if the convergence of the boundaries is smooth, then the convergence is smooth everywhere.

#### Article information

Source
J. Differential Geom., Volume 102, Number 3 (2016), 501-535.

Dates
First available in Project Euclid: 29 February 2016

https://projecteuclid.org/euclid.jdg/1456754017

Digital Object Identifier
doi:10.4310/jdg/1456754017

Mathematical Reviews number (MathSciNet)
MR3466806

Zentralblatt MATH identifier
1341.53094

#### Citation

White, Brian. Controlling area blow-up in minimal or bounded mean curvature varieties. J. Differential Geom. 102 (2016), no. 3, 501--535. doi:10.4310/jdg/1456754017. https://projecteuclid.org/euclid.jdg/1456754017