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arXiv 1004.2997math.AGhep-th
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卡-丘-西格尔三重图的几何和算术

The geometry and arithmetic of a Calabi-Yau Siegel threefold

Slawomir Cynk, Eberhard Freitag, Riccardo Salvati Manni

摘要:

本文详细讨论了一个具有Calabi-Yau模型的模簇$\cal Y$,即$\tilde{\cal Y}$ .我们将描述模形式环的结构及其几何形状。我们将举例说明产生霍奇数的两种不同方法。第一个使用$\cal Y$的定义作为另一个已知的卡-丘簇的商。在这种情况下,我们将得到霍奇数,考虑到集团对$\cal X$的crepant分辨率$\tilde{\cal X}$的作用。第二种是纯代数几何的,使用从模形式环导出的方程,并基于明确确定卡-丘模型$\tilde{\cal Y}$和计算皮卡德群和欧拉示性数。

英文摘要:

In this paper we treat in details a modular variety $\cal Y$ that has a Calabi-Yau model, $\tilde{\cal Y}$. We shall describe the structure of the ring of modular forms and its geometry. We shall illustrate two different methods of producing the Hodge numbers. The first uses the definition of $\cal Y$ as the quotient of another known Calabi-Yau variety. In this case we will get the Hodge numbers considering the action of the group on a crepant resolution $\tilde{\cal X}$ of $\cal X$. The second, purely algebraic geometric, uses the equations derived from the ring of modular forms and is based on determining explicitly the Calabi-Yau model $\tilde{\cal Y}$ and computing the Picard group and the Euler characteristic.

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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