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arXiv 0905.2550math.NT
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数域上的模阿贝尔簇

Modular abelian varieties over number fields

Xavier Guitart, Jordi Quer

摘要:

本文的主要结果是对定义在Galois数域上的阿贝尔簇$B/K$的一个刻画,即Zeta函数$L(B/K;s)$等价于同余子群$Γ_1(N)$的非CM新形式的Zeta函数的乘积.表征涉及端(B)的结构、$B$的伽罗瓦共轭之间的同构以及附着于$B/K$的伽罗瓦上同调类。我们称具有这种性质的簇为强模的。最后一节研究了一类具有四元数乘法的阿贝尔曲面。作为说明的方式,在该文件的一般结果可以应用,我们证明了一些特定的阿贝尔曲面属于该家庭的强模性,我们展示了如何找到非平凡的例子强模品种扭曲,并证明了存在的强模曲面满足某些性质。

英文摘要:

The main result of this paper is a characterization of the abelian varieties $B/K$ defined over Galois number fields with the property that the zeta function $L(B/K;s)$ is equivalent to the product of zeta functions of non-CM newforms for congruence subgroups $Γ_1(N)$. The characterization involves the structure of End(B), isogenies between the Galois conjugates of $B$, and a Galois cohomology class attached to $B/K$. We call the varieties having this property strongly modular. The last section is devoted to the study of a family of abelian surfaces with quaternionic multiplication. As an illustration of the ways in which the general results of the paper can be applied we prove the strong modularity of some particular abelian surfaces belonging to that family, we show how to find nontrivial examples of strongly modular varieties by twisting, and prove the existence of strongly modular surfaces satisfying certain properties.

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