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arXiv 1703.04470math.AGmath.NT
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具有平行水平结构的Hodge型Shimura品种中央叶的观察

On central leaves of Hodge-type Shimura varieties with parahoric level structure

Wansu Kim

摘要:

Kisin和Pappas构造了在$p>2$上具有对位水平结构的Hodge型Shimura簇的积分模型,使得mod~ $p$点的形式邻域可以解释为具有一些Tate圈的$p$ -可除群的变形空间(推广了Faltings构造).本文研究了具有仿射水平结构的Kisin-Pappas积分模型的mod~ $p$点的形式邻域中的中心叶和闭Newton层,即得到了Newton层的中心叶维数和几乎乘积结构.在超特殊级结构的情况下(即,在好约化的情况下),我们的主要结果已由Hamacher得到,本文的结果对分歧群也成立.

英文摘要:

Kisin and Pappas constructed integral models of Hodge-type Shimura varieties with parahoric level structure at $p>2$, such that the formal neighbourhood of a mod~$p$ point can be interpreted as a deformation space of $p$-divisible group with some Tate cycles (generalising Faltings' construction). In this paper, we study the central leaf and the closed Newton stratum in the formal neighbourhoods of mod~$p$ points of Kisin-Pappas integral models with parahoric level structure; namely, we obtain the dimension of central leaves and the almost product structure of Newton strata. In the case of hyperspecial level strucure (i.e., in the good reduction case), our main results were already obtained by Hamacher, and the result of this paper holds for ramified groups as well.

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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