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arXiv · 1711.04335

Albanese kernels and Griffiths groups

Bruno Kahn
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Abstract

We describe the Griffiths group of the product of a curve $C$ and a surface $S$ as a quotient of the Albanese kernel of $S$ over the function field of $C$. When $C$ is a hyperplane section of $S$ varying in a Lefschetz pencil, we prove the nonvanishing in $\text{Griff}(C\times S)$ of a modification of the graph of the embedding $C\hookrightarrow S$ for infinitely many members of the pencil, provided the ground field $k$ is of characteristic $0$, the geometric genus of $S$ is $>0$, and $k$ is large or $S$ is "of motivated abelian type".

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Bruno Kahn. 2017-11-12. Albanese kernels and Griffiths groups. https://doi.org/10.2140/tunis.2021.3.589

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