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Witten's top Chern class is a particular cohomology class on the moduli space of Riemann surfaces endowed with r-spin structures. It plays a key role in Witten's conjecture relating to the intersection theory on these moduli spaces. Our…

Algebraic Geometry · Mathematics 2014-11-11 Sergei Shadrin , Dimitri Zvonkine

We give two recursions for computing top intersections of tautological classes on blowups of moduli spaces of genus-one curves. One of these recursions is analogous to the well-known string equation. As shown in previous papers, these…

Algebraic Geometry · Mathematics 2007-05-23 Aleksey Zinger

We explain how to compute top-dimensional intersections of psi-classes on moduli spaces of m-stable curves. On the moduli spaces of Deligne-Mumford stable pointed curves of genus one, these intersection numbers are determined by two…

Algebraic Geometry · Mathematics 2018-08-29 David Ishii Smyth

The papers [3,1,4,10] constructed an intersection theory on the moduli space of $r$-spin disks, and proved it satisfies mirror symmetry and relations with integrable hierarchies. That theory considered only disks with a single boundary…

Algebraic Geometry · Mathematics 2026-01-09 Ran J. Tessler , Yizhen Zhao

We investigate the geometry and topology of a standard moduli space of stable bundles on a Riemann surface, and use a generalization of the Verlinde formula to derive results on intersection pairings.

dg-ga · Mathematics 2009-10-28 Rafael Herrera , Simon M. Salamon

This article treats various aspects of the geometry of the moduli of r-spin curves and its compactification. Generalized spin curves, or r-spin curves, are a natural generalization of 2-spin curves (algebraic curves with a…

Algebraic Geometry · Mathematics 2009-09-25 Tyler J. Jarvis

This is a note on calculating intersection numbers on moduli spaces of curves. A codimension 3 relation among tautological classes on the moduli space of genus 4 curves is given.

Algebraic Geometry · Mathematics 2010-03-03 Stephanie Yang

We present a topological recursion formula for calculating the intersection numbers defined on the moduli space of open Riemann surfaces. The spectral curve is $x = \frac{1}{2}y^2$, the same as spectral curve used to calculate intersection…

Mathematical Physics · Physics 2016-02-04 Brad Safnuk

Relations among tautological classes on the moduli space of stable curves are obtained via the study of Witten's r-spin theory for higher r. In order to calculate the quantum product, a new formula relating the r-spin correlators in genus 0…

Algebraic Geometry · Mathematics 2020-04-21 R. Pandharipande , A. Pixton , D. Zvonkine

We prove a new effective recursion formula for computing all intersection indices (integrals of $\psi$ classes) on the moduli space of curves, inducting only on the genus.

Algebraic Geometry · Mathematics 2007-10-30 Kefeng Liu , Hao Xu

In this paper we study effective recursion formulae for computing intersection numbers of mixed $\psi$ and $\kappa$ classes on moduli spaces of curves. By using the celebrated Witten-Kontsevich theorem, we generalize Mulase-Safnuk form of…

Algebraic Geometry · Mathematics 2013-03-28 Kefeng Liu , Hao Xu

In this paper we study relations between intersection numbers on moduli spaces of curves and Hurwitz numbers. First, we prove two formulas expressing Hurwitz numbers of (generalized) polynomials via intersections on moduli spaces of curves.…

Algebraic Geometry · Mathematics 2010-10-04 Sergei Shadrin

We show that intersection numbers on the moduli space of stable bundles of coprime rank and degree over a smooth complex curve can be recovered as highest-degree asymptotics in formulas of Vafa-Intriligator type. In particular, we…

Algebraic Geometry · Mathematics 2007-05-23 Alina Marian , Dragos Oprea

In a 1992 paper, Witten gave a formula for the intersection pairings of the moduli space of flat $G$-bundles over an oriented surface, possibly with markings. In this paper, we give a general proof of Witten's formula, for arbitrary…

Symplectic Geometry · Mathematics 2007-07-26 E. Meinrenken

We establish the Airy curve case of a conjecture of Gukov and Su{\l}kowski by reducing to Dijkgraaf-Verlinde-Verlinde Virasoro constraints satisfied by the intersection numbers on moduli spaces of algebraic curves.

Algebraic Geometry · Mathematics 2012-06-27 Jian Zhou

We derive effective recursion formulae of top intersections in the tautological ring $R^*(M_g)$ of the moduli space of curves of genus $g\geq 2$. As an application, we prove a convolution-type tautological relation in $R^{g-2}(M_g)$.

Algebraic Geometry · Mathematics 2013-03-28 Kefeng Liu , Hao Xu

We present a series of new results we obtained recently about the intersection numbers of tautological classes on moduli spaces of curves, including a simple formula of the n-point functions for Witten's $\tau$ classes, an effective…

Algebraic Geometry · Mathematics 2011-03-31 Kefeng Liu , Hao Xu

This article investigates the intersection numbers of the moduli space of p-spin curves with the help of matrix models. The explicit integral representations that are derived for the generating functions of these intersection numbers…

Mathematical Physics · Physics 2020-07-15 E. Brezin , S. Hikami

A complete set of the Virasoro and W-constraints for the Kontsevich-Penner model, which conjecturally describes intersections on moduli spaces of open curves, was derived in our previous work. Here we show that these constraints can be…

Mathematical Physics · Physics 2017-09-13 Alexander Alexandrov

We lay the foundation for a version of $r$-spin theory in genus zero for Riemann surfaces with boundary. In particular, we define the notion of $r$-spin disks, their moduli space, and the Witten bundle, we show that the moduli space is a…

Mathematical Physics · Physics 2020-03-03 Alexandr Buryak , Emily Clader , Ran J. Tessler
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