Hyperbolic geometry and real moduli of five points on the line

Research output: Working paper/Preprint › Preprint

Authors

  • Atahualpa Olivier Daniel de Gaay Fortman

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Original languageEnglish
Publication statusE-pub ahead of print - 3 Aug 2023

Abstract

We show that each connected component of the moduli space of smooth real binary quintics is isomorphic to an arithmetic quotient of an open subset of the real hyperbolic plane. Moreover, our main result says that the induced metric on this moduli space extends to a complete real hyperbolic orbifold structure on the space of stable real binary quintics. This turns the moduli space of stable real binary quintics into a real two-dimensional ball quotient, whose fundamental domain is given by the hyperbolic triangle of angles \(\pi/3, \pi/5\) and \(\pi/10\), and whose fundamental group is non-arithmetic.

Keywords

    math.AG

Cite this

Hyperbolic geometry and real moduli of five points on the line. / de Gaay Fortman, Atahualpa Olivier Daniel.
2023.

Research output: Working paper/Preprint › Preprint

de Gaay Fortman AOD. Hyperbolic geometry and real moduli of five points on the line. 2023 Aug 3. Epub 2023 Aug 3. doi: https://doi.org/10.48550/arXiv.2111.06381
de Gaay Fortman, Atahualpa Olivier Daniel. / Hyperbolic geometry and real moduli of five points on the line. 2023.
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