Chow–Künneth projectors for modular varieties

We show the existence of the Chow–Künneth projectors for certain varieties, including Kuga–Shimura varieties of Hilbert modular varieties. The Chow–Künneth projectors of a smooth projective variety are, by definition, mutually orthogonal idempotents of the Chow ring of self-correspondences which giv...

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Published inComptes rendus. Mathématique Vol. 335; no. 9; pp. 745 - 750
Main Authors Gordon, B.Brent, Hanamura, Masaki, Murre, Jacob P.
Format Journal Article
LanguageEnglish
French
Published Paris Elsevier SAS 01.11.2002
Elsevier
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Summary:We show the existence of the Chow–Künneth projectors for certain varieties, including Kuga–Shimura varieties of Hilbert modular varieties. The Chow–Künneth projectors of a smooth projective variety are, by definition, mutually orthogonal idempotents of the Chow ring of self-correspondences which give decomposition of the total cohomology of the variety into degree pieces. To cite this article: B.B. Gordon et al., C. R. Acad. Sci. Paris, Ser. I 335 (2002) 745–750. Nous démontrons l'existence des projecteurs de Chow–Künneth pour certaines variétés, incluant les variétés de Kuga–Shimura des variétés modulaires de Hilbert. Les projecteurs de Chow–Künneth d'une variété lisse projective sont par définition des idempotents orthogonaux de l'anneau de Chow des auto-correspondances qui donnent la décomposition par les degrés de la cohomologie totale de la variété. Pour citer cet article : B.B. Gordon et al., C. R. Acad. Sci. Paris, Ser. I 335 (2002) 745–750.
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ISSN:1631-073X
1778-3569
1778-3569
DOI:10.1016/S1631-073X(02)02506-2