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Bibliographic Details
Main Author: Nakata, Yuki
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2605.14307
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Table of Contents:
  • A global packet may simultaneously contain an automorphic representation and a non-automorphic representation. The global $\mathcal S$-group is expected, and known in some cases, to specify the automorphic representations in each global packet. For a covering group of an algebraic torus, it is not obvious from the definition whether the analogue of a global $\mathcal S$-group has finite order. In this paper, we verify this finiteness for a Brylinski-Deligne covering group of a torus.