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arXiv · 2403.15889

Fine Structure of Singularities in Area-Minimizing Currents Mod$(q)$

Camillo De Lellis·Paul Minter·Anna Skorobogatova
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Abstract

We study fine structural properties related to the interior regularity of $m$-dimensional area minimizing currents mod$(q)$ in arbitrary codimension. We show: (i) the set of points where at least one tangent cone is translation invariant along $m-1$ directions is locally a connected $C^{1,\beta}$ submanifold, and moreover such points have unique tangent cones; (ii) the remaining part of the singular set is countably $(m-2)$-rectifiable, with a unique flat tangent cone (with multiplicity) at $\mathcal{H}^{m-2}$-a.e. flat singular point. These results are consequences of fine excess decay theorems as well as almost monotonicity of a universal frequency function.

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Camillo De Lellis, Paul Minter, Anna Skorobogatova. 2024-03-23. Fine Structure of Singularities in Area-Minimizing Currents Mod$(q)$. https://doi.org/10.1515/crelle-2026-0028

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