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Bibliographic Details
Main Authors: Deligne, P., Lusztig, G.
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2508.13951
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Table of Contents:
  • Consider a Chevalley group over a finite field $F_q$ such that the longest element of the Weyl group is central. We construct an involution $ξ\mapstoξ^!$ of the set of unipotent representations of this group such that the degree polynomial of a unipotent representation $ξ$ is obtained up to sign from the degree polynomial of $ξ^!$ by changing $q$ to $-q$.