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Bibliographic Details
Main Author: Mao, Shengkai
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2504.13911
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Table of Contents:
  • We compute the level groups associated with mixed Shimura varieties that appear at the boundaries of compactifications of Shimura varieties and show that the boundaries of minimal compactifications of Pappas-Rapoport integral models are finite quotients of smaller Pappas-Rapoport integral models. Additionally, we prove that the compactifications of integral models of Hodge-type Shimura varieties with quasi-parahoric level structures are independent of the choice of Siegel embedding, and use this to construct and analyze the change-of-parahoric morphisms on these compactifications.