Actions of relative Weyl groups II

Actions of relative Weyl groups II
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相关 Weyl 组 II 的作用

DOI:
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发表时间:
2001
期刊:
影响因子:
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通讯作者:
C. Bonnafé
C. Bonnafé
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文献类型:
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作者:
C. Bonnafé

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本文第二部分的目的是明确地计算有限约化群的正则幂幺类的特征函数的Lusztig限制,从而改进了Digne,Lehrer和Michel的一个定理。我们遵循他们的证明,但引入新的信息,即计算态射定义在第一部分时,v是一个正规的幂幺元素。这一新的信息是通过研究推广的各种同伴矩阵介绍了斯坦伯格。
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.