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In this paper we study volumes of moduli spaces of hyperbolic surfaces with geodesic, cusp and cone boundary components. We compute the volumes in some new cases, in particular when there exists a large cone angle. This allows us to give…

Algebraic Geometry · Mathematics 2025-06-18 Lukas Anagnostou , Paul Norbury

The moduli spaces of hyperbolic surfaces of genus g with n geodesic boundary components are naturally symplectic manifolds. Mirzakhani proved that their volumes are polynomials in the lengths of the boundaries by computing the volumes…

Algebraic Geometry · Mathematics 2007-05-23 Norman Do , Paul Norbury

In this paper, we derive a simple recursion formula for the Weil-Petersson volumes of moduli spaces of hyperbolic surfaces with boundaries. This formula demonstrates the polynomiality of the volume functions. By constructing the Laplace…

Algebraic Geometry · Mathematics 2024-12-11 Yukun Du

Let $V_{g,m,n}(\overrightarrow L,\overrightarrow \theta)$ 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…

Geometric Topology · Mathematics 2026-03-13 Haoyang Jiang , Lixin Liu

We study the moduli spaces of flat surfaces with prescribed conical singularities. Veech showed that these spaces are diffeomorphic to the moduli spaces of marked Riemann surfaces, and endowed with a natural volume form depending on the…

Algebraic Geometry · Mathematics 2024-01-03 Adrien Sauvaget

The Weil-Petersson volumes of moduli spaces of hyperbolic surfaces with geodesic boundaries are known to be given by polynomials in the boundary lengths. These polynomials satisfy Mirzakhani's recursion formula, which fits into the general…

Mathematical Physics · Physics 2023-07-11 Timothy Budd , Bart Zonneveld

Moduli spaces of hyperbolic surfaces may be endowed with a symplectic structure via the Weil-Petersson form. Mirzakhani proved that Weil-Petersson volumes exhibit polynomial behaviour and that their coefficients store intersection numbers…

Geometric Topology · Mathematics 2011-03-25 Norman Do

Weil-Petersson and Masur-Veech volumes measure the sizes of moduli spaces of Riemann surfaces equipped with hyperbolic and flat metrics, respectively. Over the past several decades, the computation of these volumes has inspired remarkable…

Geometric Topology · Mathematics 2026-03-10 Dawei Chen , Scott Mullane

We give an overview of the proof for Mirzakhani's volume recursion for the Weil-Petersson volumes of the moduli spaces of genus $g$ hyperbolic surfaces with $n$ labeled geodesic boundary components, and her application of this recursion to…

Geometric Topology · Mathematics 2015-09-24 Yi Huang

In this paper we relate volumes of moduli spaces of super Riemann surfaces to integrals over the moduli space of stable Riemann surfaces $\overline{\cal M}_{g,n}$. This allows us to prove via algebraic geometry a recursion between the…

Algebraic Geometry · Mathematics 2025-12-24 Paul Norbury

We compute the Riemannian volume on the moduli space of flat connections on a nonorientable 2-manifold, for a natural class of metrics. We also show that Witten's volume formula for these moduli spaces may be derived using Haar measure, and…

Symplectic Geometry · Mathematics 2021-04-14 Lisa Jeffrey , Nan-Kuo Ho

We derive the Weil-Petersson measure on the moduli space of hyperbolic surfaces with defects of arbitrary opening angles and use this to compute its volume. We conjecture a matrix integral computing the corresponding volumes and confirm…

High Energy Physics - Theory · Physics 2023-05-24 Lorenz Eberhardt , Gustavo J. Turiaci

We generalise Mirzakhani's recursion to volumes of moduli spaces of bordered Klein surfaces, which include non-orientable surfaces. On these moduli spaces, the top form introduced by Norbury diverges as the lengths of 1-sided geodesics…

Geometric Topology · Mathematics 2025-12-01 Elba Garcia-Failde , Paolo Gregori , Kento Osuga

Based on the discovery of the duality between Jackiw-Teitelboim quantum gravity and a double-scaled matrix ensemble by Saad, Shenker and Stanford in 2019, we show how consistency between the two theories in the universal Random Matrix…

High Energy Physics - Theory · Physics 2023-04-27 Torsten Weber , Fabian Haneder , Klaus Richter , Juan Diego Urbina

We show that the Mirzakhani volume, as introduced by Chekhov, of the moduli space of every crowned hyperbolic surface is naturally expressible as a sum of Gaussian rational multiples of polylogarithms evaluated at $\pm1$ and $\pm\sqrt{-1}$.

Geometric Topology · Mathematics 2025-10-28 Yi Huang , Ivan Telpukhovskiy

By a result of W.~P. Thurston, the moduli space of flat metrics on the sphere with $n$ cone singularities of prescribed positive curvatures is a complex hyperbolic orbifold of dimension $n-3$. The Hermitian form comes from the area of the…

Differential Geometry · Mathematics 2017-11-17 François Fillastre , Ivan Izmestiev

We discuss Witten's formulas for the symplectic volumes of moduli spaces of flat connections on 2-manifolds from the viewpoint of Hamiltonian cobordism as introduced by Ginzburg-Guillemin-Karshon.

dg-ga · Mathematics 2008-02-03 Eckhard Meinrenken , Chris Woodward

A decorated surface S is an oriented topological surface with marked points on the boundary considered modulo the isotopy. We consider the moduli space of hyperbolic structures on S with geodesic boundary, such that the hyperbolic structure…

Algebraic Geometry · Mathematics 2024-11-05 Alexander B. Goncharov , Zhe Sun

We show that Mirzakhani's recursions for the volumes of moduli space of Riemann surfaces are a special case of random matrix loop equations, and therefore we confirm again that Kontsevitch's integral is a generating function for those…

Mathematical Physics · Physics 2007-06-13 Bertrand Eynard , Nicolas Orantin

In this paper, we are interested in flat metric structures with conical singularities on surfaces which are obtained by deforming translation surface structures. The moduli space of such flat metric structures can be viewed as some…

Differential Geometry · Mathematics 2010-02-18 Duc-Manh Nguyen
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