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arXiv 1809.09604math.NTmath.AG
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有限域上K3曲面的CM提升及其对Tate猜想的应用

CM liftings of K3 surfaces over finite fields and their applications to the Tate conjecture

Kazuhiro Ito, Tetsushi Ito, Teruhisa Koshikawa

摘要:

给出了正交Shimura簇的积分标准模型和Kuga-Satake态射在有限域上K3曲面的运算中的应用。本文证明了有限域上的每个有限高的K3曲面都有一个特征0提升,其通类纤维是一个具有复乘的K3曲面。结合Mukai和Buskin的结果,证明了有限域上K3曲面平方的Tate猜想.为了得到这些结果,我们构造了一个类似的Kisin的代数群的有限高的K3表面,并构造特征0提升的K3表面保持的作用环的代数群。我们得到这些结果的任何特征,包括那些特征2或3的有限域上的K3曲面。

英文摘要:

We give applications of integral canonical models of orthogonal Shimura varieties and the Kuga-Satake morphism to the arithmetic of K3 surfaces over finite fields. We prove every K3 surface of finite height over a finite field admits a characteristic 0 lifting whose generic fiber is a K3 surface with complex multiplication. Combined with the results of Mukai and Buskin, we prove the Tate conjecture for the square of a K3 surface over a finite field. To obtain these results, we construct an analogue of Kisin's algebraic group for a K3 surface of finite height, and construct characteristic 0 liftings of the K3 surface preserving the action of tori in the algebraic group. We obtain these results for K3 surfaces over finite fields of any characteristics, including those of characteristic 2 or 3.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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