THE MOTIVE OF THE HILBERT CUBE $X^{[3]}$

The Hilbert scheme $X^{[3]}$ of length-3 subschemes of a smooth projective variety $X$ is known to be sm...

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Main Authors: MINGMIN SHEN, CHARLES VIAL
Format: Article
Language:English
Published: Cambridge University Press 2016-01-01
Series:Forum of Mathematics, Sigma
Subjects:
Online Access:https://www.cambridge.org/core/product/identifier/S2050509416000256/type/journal_article
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author MINGMIN SHEN
CHARLES VIAL
author_facet MINGMIN SHEN
CHARLES VIAL
author_sort MINGMIN SHEN
collection DOAJ
description The Hilbert scheme $X^{[3]}$ of length-3 subschemes of a smooth projective variety $X$ is known to be smooth and projective. We investigate whether the property of having a multiplicative Chow–Künneth decomposition is stable under taking the Hilbert cube. This is achieved by considering an explicit resolution of the rational map $X^{3}{\dashrightarrow}X^{[3]}$ . The case of the Hilbert square was taken care of in Shen and Vial [Mem. Amer. Math. Soc. 240(1139) (2016), vii+163 pp]. The archetypical examples of varieties endowed with a multiplicative Chow–Künneth decomposition is given by abelian varieties. Recent work seems to suggest that hyperKähler varieties share the same property. Roughly, if a smooth projective variety $X$ has a multiplicative Chow–Künneth decomposition, then the Chow rings of its powers $X^{n}$ have a filtration, which is the expected Bloch–Beilinson filtration, that is split.
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spelling doaj.art-98ccce1346ec47a296e0aa6856b3048b2023-03-09T12:34:41ZengCambridge University PressForum of Mathematics, Sigma2050-50942016-01-01410.1017/fms.2016.25THE MOTIVE OF THE HILBERT CUBE $X^{[3]}$MINGMIN SHEN0CHARLES VIAL1KdV Institute for Mathematics, University of Amsterdam, P.O. Box 94248, 1090 GE Amsterdam, Netherlands;DPMMS, University of Cambridge, Wilberforce Road, Cambridge CB3 0WB, UK;The Hilbert scheme $X^{[3]}$ of length-3 subschemes of a smooth projective variety $X$ is known to be smooth and projective. We investigate whether the property of having a multiplicative Chow–Künneth decomposition is stable under taking the Hilbert cube. This is achieved by considering an explicit resolution of the rational map $X^{3}{\dashrightarrow}X^{[3]}$ . The case of the Hilbert square was taken care of in Shen and Vial [Mem. Amer. Math. Soc. 240(1139) (2016), vii+163 pp]. The archetypical examples of varieties endowed with a multiplicative Chow–Künneth decomposition is given by abelian varieties. Recent work seems to suggest that hyperKähler varieties share the same property. Roughly, if a smooth projective variety $X$ has a multiplicative Chow–Künneth decomposition, then the Chow rings of its powers $X^{n}$ have a filtration, which is the expected Bloch–Beilinson filtration, that is split.https://www.cambridge.org/core/product/identifier/S2050509416000256/type/journal_article14C05 (primary)14C2514C15 (secondary)
spellingShingle MINGMIN SHEN
CHARLES VIAL
THE MOTIVE OF THE HILBERT CUBE $X^{[3]}$
Forum of Mathematics, Sigma
14C05 (primary)
14C25
14C15 (secondary)
title THE MOTIVE OF THE HILBERT CUBE $X^{[3]}$
title_full THE MOTIVE OF THE HILBERT CUBE $X^{[3]}$
title_fullStr THE MOTIVE OF THE HILBERT CUBE $X^{[3]}$
title_full_unstemmed THE MOTIVE OF THE HILBERT CUBE $X^{[3]}$
title_short THE MOTIVE OF THE HILBERT CUBE $X^{[3]}$
title_sort motive of the hilbert cube x 3
topic 14C05 (primary)
14C25
14C15 (secondary)
url https://www.cambridge.org/core/product/identifier/S2050509416000256/type/journal_article
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