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arXiv 1010.3897math.AG
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具有五阶自同构的交换四重的两个模空间

Two moduli spaces of abelian fourfolds with an automorphism of order five

Bert van Geemen, Matthias Schuett

摘要:

我们发现明确的投影模型的紧凑的志村曲线和(非紧凑)的表面,这是模空间的主要极化阿贝尔四倍阶自同构。该曲面在IP^4中有一个24节点的正则模型,它是两个S_5不变三次曲面的完全相交。它是由一个希尔伯特模块化表面为主,我们给出了一个模块化的解释。我们还确定了L系列的这些品种以及几个模块覆盖的志村曲线。

英文摘要:

We find explicit projective models of a compact Shimura curve and of a (non-compact) surface which are the moduli spaces of principally polarised abelian fourfolds with an automorphism of order five. The surface has a 24-nodal canonical model in IP^4 which is the complete intersection of two S_5-invariant cubics. It is dominated by a Hilbert modular surface and we give a modular interpretation for this. We also determine the L-series of these varieties as well as those of several modular covers of the Shimura curve.

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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