Author

Claire Voisin

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Preprint Jul 2026

On the Chow ring of very general abelian varieties and a question of Pirola

We prove that for a very general abelian variety of dimension $\geq 4$, a divisor $D\in {\rm CH}^1(A)$ that satisfies $D^2=0$ in ${\rm CH}^2(A)$ is of torsion. The same result is also established for a very general Jacobian in genus $4$. We use then the second statement in order to prove a conjecture of Pirola, which s...

Claire Voisin · 1 citation · ⚡1