Recursion formula for the volumes of moduli spaces of compact hyperbolic surfaces with cone points

Fuente: arXiv
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Main Authors: Jiang, Haoyang, Liu, Lixin
Format: Preprint
Published: 2026
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author Jiang, Haoyang
Liu, Lixin
author_facet Jiang, Haoyang
Liu, Lixin
contents Let $V_{g,m,n}(\overrightarrow L,\overrightarrow θ)$ be the Weil-Petersson volume of the moduli space of hyperbolic surfaces of genus g with m geodesic boundary components of length $\overrightarrow L=(\ell_1,...,\ell_m)$ and $n$ cone points of angle $\overrightarrow θ=(θ_1,...θ_n)$. By using the generalized McShane's identities, we show that $V_{g,m,n}(\overrightarrow L,\overrightarrow θ)$ is a polynomial of $(\ell_1,...,\ell_n,iθ_1,...,iθ_m)$. And we obtain a recursion formula for $V_{g,m,n}(\overrightarrow L,\overrightarrow θ)$, which is a generalization of Mirzakhani's result.
format Preprint
id arxiv_https___arxiv_org_abs_2603_11785
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Recursion formula for the volumes of moduli spaces of compact hyperbolic surfaces with cone points
Jiang, Haoyang
Liu, Lixin
Geometric Topology
Let $V_{g,m,n}(\overrightarrow L,\overrightarrow θ)$ be the Weil-Petersson volume of the moduli space of hyperbolic surfaces of genus g with m geodesic boundary components of length $\overrightarrow L=(\ell_1,...,\ell_m)$ and $n$ cone points of angle $\overrightarrow θ=(θ_1,...θ_n)$. By using the generalized McShane's identities, we show that $V_{g,m,n}(\overrightarrow L,\overrightarrow θ)$ is a polynomial of $(\ell_1,...,\ell_n,iθ_1,...,iθ_m)$. And we obtain a recursion formula for $V_{g,m,n}(\overrightarrow L,\overrightarrow θ)$, which is a generalization of Mirzakhani's result.
title Recursion formula for the volumes of moduli spaces of compact hyperbolic surfaces with cone points
topic Geometric Topology
url https://arxiv.org/abs/2603.11785