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arXiv 1005.2670math.AGmath.AT
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Tate模的导出基本群

Derived Fundamental Groups for Tate Motives

Markus Spitzweck

摘要:

我们构造了域上连通光滑概形上Tate动机的导出基本群格式。我们发现,存在一个亲仿射派生群计划的有理数,使其类别的完美表示模型的三角形类的合理混合泰特动机。根据一个假设,这是弱于积分版本的Beilinson-Soule消失猜想,我们表明,有一个仿射导出群计划的整数,使其完美的表示模型泰特动机与积分系数。例如,对于数字字段满足该假设。这推广了以前的非衍生结构的基本群计划的泰特动机与合理的系数。

英文摘要:

We construct derived fundamental group schemes for Tate motives over connected smooth schemes over fields. We show that there exists a pro affine derived group scheme over the rationals such that its category of perfect representations models the triangulated category of rational mixed Tate motives. Under a hypothesis which is weaker than an integral version of the Beilinson-Soule vanishing conjecture we show that there is an affine derived group scheme over the integers such that its perfect representations model Tate motives with integral coefficients. The hypothesis is for example fulfilled for number fields. This generalizes previous non-derived constructions of fundamental group schemes for Tate motives with rational coefficients.

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