Lycka Drakengren

collaborators

3 papers

math.AG2026

The fiber product of the Torelli map with any product $A_{g_{1}} \times \dots \times A_{g_{k}} \to A_{g}$ is reduced

Lycka Drakengren

We prove that the fiber product of the Torelli map $t : M_{g}^{c t} \to A_{g}$ with any product $\mathcal{A}_{g_1}\times\dots\times \mathcal{A}_{g_k} \to \mathca…

math.AG2026

Torelli loci, product cycles, and the homomorphism conjecture for $A_{g}$

Samir Canning, Lycka Drakengren, Jeremy Feusi +7

The tautological $Q$ -subalgebra $R^{*} (A_{g}) \subset CH^{*} (A_{g})$ of the Chow ring of the moduli space of principally polarized abelian va…

math.AG2025

Self-intersection of the Torelli map

Lycka Drakengren

The Torelli map $t : M_{g}^{c t} \to A_{g}$ is far from an immersion for $g \geq 3$ : the self-fiber product of the Torelli map for $g \geq 3$ has several component…

The fiber product of the Torelli map with any product Ag1​​×⋯×Agk​​→Ag​ is reduced

Torelli loci, product cycles, and the homomorphism conjecture for Ag​

Self-intersection of the Torelli map

The fiber product of the Torelli map with any product $A_{g_{1}} \times \dots \times A_{g_{k}} \to A_{g}$ is reduced

Torelli loci, product cycles, and the homomorphism conjecture for $A_{g}$