English

On a conjecture of Pappas and Rapoport

Number Theory 2026-04-27 v4 Algebraic Geometry

Abstract

We prove a conjecture of Pappas and Rapoport about the existence of ''canonical'' integral models of Shimura varieties of Hodge type with quasi-parahoric level structure at a prime pp. For these integral models, we moreover show uniformization of isogeny classes by integral local Shimura varieties, and prove a conjecture of Kisin and Pappas on local model diagrams.

Keywords

Cite

@article{arxiv.2403.19771,
  title  = {On a conjecture of Pappas and Rapoport},
  author = {Patrick Daniels and Pol van Hoften and Dongryul Kim and Mingjia Zhang},
  journal= {arXiv preprint arXiv:2403.19771},
  year   = {2026}
}

Comments

Final version. Published in Mathematische Annalen