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Algebraic cycles and intersections of three quadrics

Published online by Cambridge University Press:  07 September 2021

ROBERT LATERVEER*
Affiliation:
Institut de Recherche Mathématique Avancée, CNRS – Université de Strasbourg, 7 Rue René Descartes, 67084 STRASBOURG CEDEX, FRANCE.† e-mail: robert.laterveer@math.unistra.fr

Abstract

Let Y be a smooth complete intersection of three quadrics, and assume the dimension of Y is even. We show that Y has a multiplicative Chow–Künneth decomposition, in the sense of Shen–Vial. As a consequence, the Chow ring of (powers of) Y displays K3-like behaviour. As a by-product of the argument, we also establish a multiplicative Chow–Künneth decomposition for double planes.

Type
Research Article
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of Cambridge Philosophical Society

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Footnotes

Supported by ANR grant ANR-20-CE40-0023.

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