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arXiv 2009.01191math.AGmath.NT
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Beilinson几何高度配对的推广

A generalization of Beilinson's geometric height pairing

Damian Rössler, Tamás Szamuely

摘要:

在第一部分,他的开创性文件的高度配对,贝林森建造了一个$\ell$ -进高度配对合理周群的同调平凡周期的互补余维光滑投影品种的功能领域的曲线在一个代数闭域,并要求推广到高维基地。在本文中,我们回答贝林森的问题,通过构建一个配对的品种定义在一个代数闭域上的光滑簇$B$的函数域,值在第二$\ell$ -进上同调群的$B$。在$\Bbb C$上,我们的配对实际上是$\Bbb Q$ -值的,并且通常我们推测它的几何起源。

英文摘要:

In the first section of his seminal paper on height pairings, Beilinson constructed an $\ell$-adic height pairing for rational Chow groups of homologically trivial cycles of complementary codimension on smooth projective varieties over the function field of a curve over an algebraically closed field, and asked about an generalization to higher dimensional bases. In this paper we answer Beilinson's question by constructing a pairing for varieties defined over the function field of a smooth variety $B$ over an algebraically closed field, with values in the second $\ell$-adic cohomology group of $B$. Over $\Bbb C$ our pairing is in fact $\Bbb Q$-valued, and in general we speculate about its geometric origin.

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