Author:
De Lellis Camillo,Nardulli Stefano,Steinbrüchel Simone
Abstract
AbstractWe consider integral area-minimizing 2-dimensional currents $T$
T
in $U\subset \mathbf {R}^{2+n}$
U
⊂
R
2
+
n
with $\partial T = Q\left [\!\![{\Gamma }\right ]\!\!]$
∂
T
=
Q
〚
Γ
〛
, where $Q\in \mathbf {N} \setminus \{0\}$
Q
∈
N
∖
{
0
}
and $\Gamma $
Γ
is sufficiently smooth. We prove that, if $q\in \Gamma $
q
∈
Γ
is a point where the density of $T$
T
is strictly below $\frac{Q+1}{2}$
Q
+
1
2
, then the current is regular at $q$
q
. The regularity is understood in the following sense: there is a neighborhood of $q$
q
in which $T$
T
consists of a finite number of regular minimal submanifolds meeting transversally at $\Gamma $
Γ
(and counted with the appropriate integer multiplicity). In view of well-known examples, our result is optimal, and it is the first nontrivial generalization of a classical theorem of Allard for $Q=1$
Q
=
1
. As a corollary, if $\Omega \subset \mathbf {R}^{2+n}$
Ω
⊂
R
2
+
n
is a bounded uniformly convex set and $\Gamma \subset \partial \Omega $
Γ
⊂
∂
Ω
a smooth 1-dimensional closed submanifold, then any area-minimizing current $T$
T
with $\partial T = Q \left [\!\![{\Gamma }\right ]\!\!]$
∂
T
=
Q
〚
Γ
〛
is regular in a neighborhood of $\Gamma $
Γ
.
Publisher
Springer Science and Business Media LLC
Cited by
1 articles.
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