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arXiv · 2311.02632

Spectrum of the Laplacian on the Fricke-Macbeath surface

Chul-hee Lee
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Abstract

The Fricke-Macbeath surface is the unique Hurwitz surface of genus 7 with 504 conformal automorphisms. In this paper, we prove that the first eigenvalue of the Laplacian on the Fricke-Macbeath surface has a sevenfold multiplicity and contained in the interval $[1.23, 1.26]$. Further, we numerically identify the 7-dimensional representation of its automorphism group corresponding to the eigenspace associated to the first eigenvalue. We also determine the Dirichlet domain centered at 0 for a Fuchsian group that uniformizes the Fricke-Macbeath surface, identifying the algebraic coordinates for its vertices.

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Chul-hee Lee. 2023-11-05. Spectrum of the Laplacian on the Fricke-Macbeath surface. https://arxiv.org/abs/2311.02632

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