The EKOR-stratification on the Siegel modular variety with parahoric level structure
Algebraic Geometry
2026-05-27 v4
Abstract
We study the arithmetic geometry of the reduction modulo 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.
Keywords
Cite
@article{arxiv.2206.07470,
title = {The EKOR-stratification on the Siegel modular variety with parahoric level structure},
author = {Manuel Hoff},
journal= {arXiv preprint arXiv:2206.07470},
year = {2026}
}
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36 pages