Green functions and Glauberman degree-divisibility

Meinolf Geck

doi:https://doi.org/10.4007/annals.2020.192.1.4

Abstract

The Glauberman correspondence is a fundamental bijection in the character theory of finite groups. In 1994, Hartley and Turull established a degree-divisibility property for characters related by that correspondence, subject to a congruence condition which should hold for the Green functions of finite groups of Lie type, as defined by Deligne and Lusztig. Here, we present a general argument for completing the proof of that congruence condition. Consequently, the degree-divisibility property holds in complete generality.

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Green functions and Glauberman degree-divisibility

Abstract

Authors