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arXiv 1402.4438math.AGmath.ATmath.KT
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沃沃茨基的混合动机与孔采维奇的不可交换混合动机

Voevodsky's mixed motives versus Kontsevich's noncommutative mixed motives

Goncalo Tabuada

摘要:

根据Kontsevich的见解,我们证明了Voevodsky的几何混合动机范畴DM与闭函子-Q(1)[2]的商完全忠实地嵌入到Kontsevich的非交换混合动机范畴KMM中.我们还表明,这种嵌入是兼容的纯动机之间的。作为应用,我们得到了范畴DM和KMM的Picard群Pic(-),Grothendieck群,Schur-有限性和Kimura-有限性之间的精确关系.特别地,Pic(DM)与Tate twists的子群Q(i)[2 i]的商注入Pic(KMM)。在此过程中,我们将KMM与Morel-Voevodsky的稳定A1-同伦范畴联系起来,从KMM中恢复Kahn-Levine的扭曲代数K理论,并将Elmendorf-Mandell关于多范畴的基础工作扩展到更广泛的环境。

英文摘要:

Following an insight of Kontsevich, we prove that the quotient of Voevodsky's category of geometric mixed motives DM by the endofunctor -Q(1)[2] embeds fully-faithfully into Kontsevich's category of noncommutative mixed motives KMM. We show also that this embedding is compatible with the one between pure motives. As an application, we obtain a precise relation between the Picard groups Pic(-), the Grothendieck groups, the Schur-finitenss, and the Kimura-finitenss of the categories DM and KMM. In particular, the quotient of Pic(DM) by the subgroup of Tate twists Q(i)[2i] injects into Pic(KMM). Along the way, we relate KMM with Morel-Voevodsky's stable A1-homotopy category, recover the twisted algebraic K-theory of Kahn-Levine from KMM, and extend Elmendorf-Mandell's foundational work on multicategories to a broader setting.

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