摘要翻译:
研究了G维正特征主极化阿贝尔变体的模空间A_g及其具有Iwahori能级结构的变体A_I。超晶格Ekedahl-Oort地层和超晶格Kottwitz-Rapoport地层都同构于Deligne-Lusztig变种的不相交组合(参见[Hoeve2008]和[Goertz,Yu2008],Resp.)。这里我们比较这些同构。我们也给出了一般截瘫情况下含在超晶格轨迹中的Kottwitz-Rapoport层的显式描述。最后,我们证明了每一个Ekedahl-Oort地层都与一个准Kottwitz-Rapoport地层同构。
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英文标题:
《Ekedahl-Oort strata and Kottwitz-Rapoport strata》
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作者:
Ulrich Goertz, Maarten Hoeve
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最新提交年份:
2008
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分类信息:
一级分类:Mathematics 数学
二级分类:Algebraic Geometry 代数几何
分类描述:Algebraic varieties, stacks, sheaves, schemes, moduli spaces, complex geometry, quantum cohomology
代数簇,叠,束,格式,模空间,复几何,量子上同调
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英文摘要:
We study the moduli space A_g of g-dimensional principally polarized abelian varieties in positive characteristic, and its variant A_I with Iwahori level structure. Both supersingular Ekedahl-Oort strata and supersingular Kottwitz-Rapoport strata are isomorphic to disjoint unions of Deligne-Lusztig varieties (see [Hoeve 2008] and [Goertz, Yu 2008], resp.). Here we compare these isomorphisms. We also give an explicit description of Kottwitz-Rapoport strata contained in the supersingular locus in the general parahoric case. Finally, we show that every Ekedahl-Oort stratum is isomorphic to a parahoric Kottwitz-Rapoport stratum.
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PDF链接:
https://arxiv.org/pdf/0808.2537