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This paper is the third in a series of four papers aiming to describe the (almost integral) Chow ring of $\overline{\mathcal{M}}_3$, the moduli stack of stable curves of genus $3$. In this paper, we compute the Chow ring of…

Algebraic Geometry · Mathematics 2023-03-10 Michele Pernice

This paper is the first in a series of four papers aiming to describe the (almost integral) Chow ring of $\bar{\mathcal{M}}_3$, the moduli stack of stable curves of genus $3$. In this paper, we introduce the moduli stack…

Algebraic Geometry · Mathematics 2023-02-22 Michele Pernice

In this paper we introduce the moduli stack $\widetilde{\mathscr{M}}_{g,n}$ of $n$-marked stable at most cuspidal curves of genus $g$ and we use it to determine the integral Chow ring of $\overline{\mathscr{M}}_{2,1}$. Along the way, we…

Algebraic Geometry · Mathematics 2024-10-30 Andrea Di Lorenzo , Michele Pernice , Angelo Vistoli

This paper is the fourth in a series of four papers aiming to describe the (almost integral) Chow ring of $\overline{\mathcal{M}}_3$, the moduli stack of stable curves of genus $3$. In this paper, we finally compute the Chow ring of…

Algebraic Geometry · Mathematics 2023-03-27 Michele Pernice

In this paper we compute the integral Chow ring of the moduli space of stable elliptic curves with three marked points by combining several patching techniques, including higher Chow groups with $\ell$-adic coefficients.

Algebraic Geometry · Mathematics 2024-10-07 Martin Bishop

In this paper we compute the Chow ring of the moduli stack $\bar{M}_2$ of stable curves of genus 2 with integral coefficients.

Algebraic Geometry · Mathematics 2019-04-18 Eric Larson

We study the integral Chow ring of the stack $\mathcal{H}_{g,n}$ parametrizing $n$-pointed smooth hyperelliptic curves of genus $g$. We compute the integral Chow ring of $\mathcal{H}_{g,n}$ for $n=1,2$ completely, while for $3\leq…

Algebraic Geometry · Mathematics 2026-04-14 Alberto Landi

This paper is the second in a series of four papers aiming to describe the (almost integral) Chow ring of $\Mbar_3$, the moduli stack of stable curves of genus $3$. In this paper, we introduce the moduli stack $\Htilde_g^r$ of hyperelliptic…

Algebraic Geometry · Mathematics 2023-02-23 Michele Pernice

We compute the integral Chow ring of the moduli stack of smooth elliptic curves with $n$ marked points for $3\leq n\leq 10$.

Algebraic Geometry · Mathematics 2023-11-21 Martin Bishop

We continue the study of the Chow ring of the moduli stack $\mathfrak{M}_{g,n}$ of prestable curves begun in [arXiv:2012.09887v2]. In genus $0$, we show that the Chow ring of $\mathfrak{M}_{0,n}$ coincides with the tautological ring and…

Algebraic Geometry · Mathematics 2021-07-21 Younghan Bae , Johannes Schmitt

We compute the rational Chow ring of the moduli stack of planar nodal curves of fixed degree and express it in terms of tautological classes. Along the way, we extend Vial's results on Chow groups of Brauer-Severi varieties to…

Algebraic Geometry · Mathematics 2025-01-10 Alessio Cela , Ajith Urundolil Kumaran , Xiaohan Yan

We study the Chow ring of the moduli stack $\mathfrak{M}_{g,n}$ of prestable curves and define the notion of tautological classes on this stack. We extend formulas for intersection products and functoriality of tautological classes under…

Algebraic Geometry · Mathematics 2022-06-02 Younghan Bae , Johannes Schmitt

This paper computes the integral Chow ring of the moduli space $M_2^{ct}$ of stable genus 2 curves of compact type. This is done by excising boundary strata from $\bar M_2$ one-by-one. During this process, we determine the Chow rings of all…

Algebraic Geometry · Mathematics 2025-03-10 Joseph Helfer , Eric Jovinelly , Eric Larson , Anda Tenie , Chengxi Wang

The rational Chow ring of the moduli space $\mathcal{M}_g$ of curves of genus $g$ is known for $g \leq 6$. Here, we determine the rational Chow rings of $\mathcal{M}_7, \mathcal{M}_8,$ and $\mathcal{M}_9$ by showing they are tautological.…

Algebraic Geometry · Mathematics 2023-10-23 Samir Canning , Hannah Larson

Introduced in [BB], simplicially stable spaces are alternative compactifications of $\mathcal{M}_{g,n}$ generalizing Hassett's moduli spaces of weighted stable curves. We give presentations of the Chow rings of these spaces in genus $0$…

Algebraic Geometry · Mathematics 2026-01-26 William C. Newman

This paper is the first in a series dedicated to computing the integral Chow rings of the moduli stacks of Prym pairs. In this work, we compute the Chow ring for Prym pairs arising from a single pair of Weierstrass points and from at most…

Algebraic Geometry · Mathematics 2025-07-15 Alessio Cela , Alberto Landi

We compute a presentation for the integral Chow rings of the moduli stacks of degree $2$ maps from smooth rational curves to projective space $\mathbb{P}^r$, as a quotient of a three-variable polynomial ring. The relations as $r$ varies…

Algebraic Geometry · Mathematics 2026-04-23 Renzo Cavalieri , Damiano Fulghesu

We compute the integral Chow ring of the stack of smooth, non-hyperelliptic curves of genus three. We obtain this result by computing the integral Chow ring of the stack of smooth plane quartics, by means of equivariant intersection theory.

Algebraic Geometry · Mathematics 2021-03-25 Andrea Di Lorenzo , Damiano Fulghesu , Angelo Vistoli

We compute the Chow rings with integral coefficients of moduli stacks of minimal Weierstrass fibrations over the projective line. For each integer $N\geq 1$, there is a moduli stack $\mathcal{W}^{\mathrm{min}}_N$ parametrizing minimal…

Algebraic Geometry · Mathematics 2023-10-27 Samir Canning , Andrea Di Lorenzo , Giovanni Inchiostro

This paper is the third and final part of a series devoted to the description of the integral Chow rings of the moduli stacks of hyperelliptic Prym pairs. For a fixed genus $g$, there are two natural stacks, $\mathcal{RH}_g$ and…

Algebraic Geometry · Mathematics 2025-09-22 Alessio Cela , Alberto Landi
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