Fixed points under pinning-preserving automorphisms of reductive group schemes

ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 2026 Open access

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Authors: Pramod N. Achar, João Lourenço, Timo Richarz, Simon Riche
DOI: 10.2422/2036-2145.202412_005
Cited by: 0

Abstract

In this paper we determine the scheme-theoretic fixed points of pinned reductive group schemes acted upon by a group of pinning-preserving automorphisms. The results are used in a companion paper to establish a ramified geometric Satake equivalence with integral or modular coefficients.

Fields of Study & Subjects

Advanced Algebra and Geometry Algebraic Geometry and Number Theory Axial and Atropisomeric Chirality Synthesis

Publication details

Journal / source
ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE
Publisher
Scuola Normale Superiore - Edizioni della Normale
Pages
38–38
Publication date
7 April 2026
Language
EN