Area Rigidity for the Regular Representation of Surface Groups

Fuente: arXiv
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Main Authors: Caniato, Riccardo, Li, Xingzhe, Song, Antoine
Format: Preprint
Published: 2025
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author Caniato, Riccardo
Li, Xingzhe
Song, Antoine
author_facet Caniato, Riccardo
Li, Xingzhe
Song, Antoine
contents Let $\tildeΣ$ be the universal cover of a closed surface $Σ$ of genus at least $2$. We characterize all equivariantly area-minimizing maps from $\tildeΣ$ to a Hilbert sphere, which are equivariant with respect to an isometric action of $π_1(Σ)$ weakly equivalent to the regular representation. As part of our proof, we classify all minimal surfaces in Hilbert spheres with constant negative Gaussian curvature. This builds on earlier results of E. Calabi, K. Kenmotsu, R. Bryant.
format Preprint
id arxiv_https___arxiv_org_abs_2508_19480
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Area Rigidity for the Regular Representation of Surface Groups
Caniato, Riccardo
Li, Xingzhe
Song, Antoine
Differential Geometry
Representation Theory
Let $\tildeΣ$ be the universal cover of a closed surface $Σ$ of genus at least $2$. We characterize all equivariantly area-minimizing maps from $\tildeΣ$ to a Hilbert sphere, which are equivariant with respect to an isometric action of $π_1(Σ)$ weakly equivalent to the regular representation. As part of our proof, we classify all minimal surfaces in Hilbert spheres with constant negative Gaussian curvature. This builds on earlier results of E. Calabi, K. Kenmotsu, R. Bryant.
title Area Rigidity for the Regular Representation of Surface Groups
topic Differential Geometry
Representation Theory
url https://arxiv.org/abs/2508.19480