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有限域上有限伪反射群的相对不变式的Poincaré级数

, PP. 68-71

Keywords: 有限域,Poincaré级数,有限伪反射群,相对不变式

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Abstract:

设Fq(q=pm,m≥1)为特征为p的有限域,V=Fnq是Fq上的n维向量空间,G是作用在V上的有限伪反射群.设χGF*q是G的一维表示,主要证明了χ(σ)=(detσ)α,0≤α≤r-1,其中,σ∈G,阶为r,r|q-1和有限域上的Molien公式,并且利用Molien公式,计算出了有限域上有限伪反射群的相对不变式的Poincaré级数.

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