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arXiv math/0301306math.NTmath.AG
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关于虚二次域上的CM阿贝尔簇

On CM abelian varieties over imaginary quadratic fields

Tonghai Yang

摘要:

在本文中,我们规范地关联到每个虚二次域$K=\Bbb Q(\sqrt{-D})$上的一个或两个同源类的CM阿贝尔簇在$K$上,取决于是否$D$是奇数或偶数($D \ne 4$)。这些阿贝尔簇的特征在于具有最小维数和最小导体,并且使得阿贝尔簇自身下降到$\Bbb Q$。当$D$是奇数或可被8整除时,它们是格罗斯和Rohrlich首先研究的“规范”。我们证明,这些阿贝尔簇有惊人的财产,其$L$ -功能在中心的消失顺序是由相关的Hecke字符的根数。证明了$K$上的CM交换簇的最小维数恰好是$K$的理想类数,并对$K$上的CM交换簇的最小维数进行了分类.

英文摘要:

In this paper, we associate canonically to every imaginary quadratic field $K=\Bbb Q(\sqrt{-D})$ one or two isogenous classes of CM abelian varieties over $K$, depending on whether $D$ is odd or even ($D \ne 4$). These abelian varieties are characterized as of smallest dimension and smallest conductor, and such that the abelian varieties themselves descend to $\Bbb Q$. When $D$ is odd or divisible by 8, they are the `canonical' ones first studied by Gross and Rohrlich. We prove that these abelian varieties have the striking property that the vanishing order of their $L$-function at the center is dictated by the root number of the associated Hecke character. We also prove that the smallest dimension of a CM abelian variety over $K$ is exactly the ideal class number of $K$ and classify when a CM abelian variety over $K$ has the smallest dimension.

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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