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arXiv · 2206.07470

The EKOR-stratification on the Siegel modular variety with parahoric level structure

Manuel Hoff
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Abstract

We study the arithmetic geometry of the reduction modulo $p$ of the Siegel modular variety with parahoric level structure. We realize the EKOR-stratification on this variety as the fibers of a smooth morphism into an algebraic stack parametrizing homogeneously polarized chains of certain truncated displays.

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Manuel Hoff. 2022-06-15. The EKOR-stratification on the Siegel modular variety with parahoric level structure. https://doi.org/10.46298/epiga.2025.10263

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