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arXiv math/9906165math.AG
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Albanese和Picard 1-动机

Albanese and Picard 1-motives

L. Barbieri-Viale, V. Srinivas

摘要:

我们描述代数定义的上同调和同调Albanese和Picard 1-动机(或混合动机)的任何代数品种的特征为零,推广经典的Albanese和Picard品种。我们计算Hodge,l-adic和De Rham实现证明德利涅猜想有关的混合Hodge结构。研究了射影丛的函子性、普适性、同伦不变性和在射影丛形成下的不变性。我们比较我们的上同调和同调1-动机正常计划。对于适当的方案,我们得到了从零圈的(Levine-Weibel)Chow群到上同调Albanese 1-motive的Abel-Jacobi映射,其中Albanese 1-motive是半阿贝尔簇的泛正则同态.利用这个泛性质,我们得到了射影局部完全交态射的motivic Gysin映射.本文是我们的初步Comptes Rendus Note的扩展版本,Academie des Sciences,Paris,Vol.326,1998。

英文摘要:

We describe algebraically defined cohomological and homological Albanese and Picard 1-motives (or mixed motives) of any algebraic variety in characteristic zero, generalizing the classical Albanese and Picard varieties. We compute Hodge, l-adic and De Rham realizations proving Deligne's conjecture for the concerned mixed Hodge structures. We investigate functoriality, universality, homotopical invariance and invariance under formation of projective bundles. We compare our cohomological and homological 1-motives for normal schemes. For proper schemes, we obtain an Abel-Jacobi map from the (Levine-Weibel) Chow group of zero cycles to our cohomological Albanese 1-motive which is the universal regular homomorphism to semi-abelian varieties. By using this universal property we get 'motivic' Gysin maps for projective local complete intersection morphisms. This paper is an extended version of our preliminary Comptes Rendus Note, Academie des Sciences, Paris, Vol. 326, 1998.

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