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arXiv:2302.01320 [math.AP]AbstractReferencesReviewsResources

Generic uniqueness for the Plateau problem

Gianmarco Caldini, Andrea Marchese, Andrea Merlo, Simone Steinbrüchel

Published 2023-02-02Version 1

Given a complete Riemannian manifold $\mathcal{M}\subset\mathbb{R}^d$ which is a Lipschitz neighbourhood retract of dimension $m+n$, of class $C^{3,\beta}$, without boundary and an oriented, closed submanifold $\Gamma \subset \mathcal M$ of dimension $m-1$, of class $C^{3,\alpha}$ with $\alpha<\beta$, which is a boundary in integral homology, we construct a complete metric space $\mathcal{B}$ of $C^{3,\alpha}$-perturbations of $\Gamma$ inside $\mathcal{M}$ with the following property. For the typical element $b\in\mathcal B$, in the sense of Baire categories, every $m$-dimensional integral current in $\mathcal{M}$ which solves the corresponding Plateau problem has an open dense set of boundary points with density $1/2$. We deduce that the typical element $b\in\mathcal{B}$ admits a unique solution to the Plateau problem. Moreover we prove that, in a complete metric space of integral currents without boundary in $\mathbb{R}^{m+n}$, metrized by the flat norm, the typical boundary admits a unique solution to the Plateau problem.

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