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Actions of relative Weyl groups II

  • Cédric Bonnafé
Veröffentlicht/Copyright: 27. Juli 2005
Journal of Group Theory
Aus der Zeitschrift Band 8 Heft 3

Abstract

The aim of this second part is to compute explicitly the Lusztig restriction of the characteristic function of a regular unipotent class of a finite reductive group, improving slightly a theorem of Digne, Lehrer and Michel. We follow their proof but introduce new information, namely the computation of morphisms defined in the first part when v is a regular unipotent element. This new information is obtained by studying generalizations of the variety of companion matrices which were introduced by Steinberg.

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Published Online: 2005-07-27
Published in Print: 2005-05-25

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Heruntergeladen am 27.11.2025 von https://www.degruyterbrill.com/document/doi/10.1515/jgth.2005.8.3.351/pdf?lang=de
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