De Rham $F$-gauges and Shimura varieties
Algebraic Geometry
2025-09-16 v3 Number Theory
Abstract
We study -gauges for de Rham cohomology of smooth algebraic varieties in characteristic . Applying to good reductions of Shimura varieties of Hodge type, we recover the Ekedahl-Oort stratifications by constructing universal de Rham -gauges with -structure. We also study the cohomology of de Rham -gauges on these varieties. In particular, in the PEL type case and when the weights of the flat automorphic vector bundles are -small, we determine the -gauge structure on their de Rham cohomology by the associated dual BGG complexes.
Cite
@article{arxiv.2403.01899,
title = {De Rham $F$-gauges and Shimura varieties},
author = {Xu Shen},
journal= {arXiv preprint arXiv:2403.01899},
year = {2025}
}
Comments
42 pages; accepted version