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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

For $n\leq 6$, we compute the integral Chow ring of every modular compactification of $\mathcal{M}_{1,n}$ parametrising only Gorenstein curves with smooth, distinct markings. These include the Deligne--Mumford, Schubert, and Smyth…

Algebraic Geometry · Mathematics 2026-04-08 Luca Battistella , Andrea Di Lorenzo

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

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

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 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

We give a formula for the integral Chow rings of weighted blow-ups. Along the way, we also compute the integral Chow rings of weighted projective stack bundles, a formula for the Gysin homomorphism of a weighted blow-up, and a…

Algebraic Geometry · Mathematics 2025-05-21 Veronica Arena , Stephen Obinna , Dan Abramovich

For $n\leq 4$, we compute the indecomposible higher Chow groups $\overline{\operatorname{CH}}(\mathcal{M}_{1,n},1)$ with integer coefficients. As an application, we give new proofs of presentations of the integral Chow rings…

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

In this paper we compute the integral Chow ring of the stack of smooth uniform cyclic covers of the projective line and we give explicit generators.

Algebraic Geometry · Mathematics 2012-04-23 Damiano Fulghesu , Filippo Viviani

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

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

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

In this paper we compute the integral Chow ring of the moduli stack $\mathcal{R}_2$ of Prym pairs of genus 2 with integral coefficients.

Algebraic Geometry · Mathematics 2025-10-10 Alessio Cela , Aitor Iribar Lopez

In this work, we introduce the moduli stack $\widetilde{\mathcal{M}}_{g,n}^r$ of $n$-pointed, $A_r$-stable curves of genus $g$ and use it to compute the Chow ring of $\overline{\mathcal{M}}_3$. As a byproduct, we also compute the Chow ring…

Algebraic Geometry · Mathematics 2023-01-10 Michele Pernice

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

We describe the Chow ring with rational coefficients of the moduli space of stable maps with marked points Mbar_{0,m}(n,d) as the subring of invariants of a ring B, relative to the action of the group of symmetries of d elements. B is…

Algebraic Geometry · Mathematics 2007-05-23 Anca Mustata , Andrei Mustata

We provide a general method for computing rational Chow rings of moduli of smooth complete intersections. We specialize this result in different ways: to compute the integral Picard group of the associated stack ; to obtain an explicit…

Algebraic Geometry · Mathematics 2022-01-19 Andrea Di Lorenzo

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 rings of the stacks ${\mathcal H}_{g,n}^w$ parametrizing hyperelliptic curves with $n$ marked Weierstrass points. We prove that the integral Chow rings of each of these stacks is generated as an algebra by any…

Algebraic Geometry · Mathematics 2024-08-01 Dan Edidin , Zhengning Hu

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
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