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Restricting globally-defined Mackey functors to nilpotent finite groups

机译:将全局定义的Mackey函子限制为幂有限组

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摘要

Let B be the Burnside ring considered as a globally-defined Mackey functor, and k be a field of positive characteristic q. We prove that, when k. circle times(Z) B is restricted to nilpotent groups of order prime to q, the only simple Mackey functors that can appear as subquotients of it are of the form SE, k, where E is the direct product of elementary abelian p-groups. In the special case k = F-2, the simple Mackey functor S-E,S-F2 must appear as a filtration factor in F-2 circle times(Z) B for every direct product of elementary abelian p-groups E of odd order.
机译:设B为被视为全局定义的Mackey仿函数的Burnside环,k为正特性q的字段。我们证明,当k。圈数(Z)B限于素数为q的幂等群,唯一可以作为其子商出现的简单Mackey仿函数的形式为SE,k,其中E是基本阿贝尔p-群的直接乘积。在特殊情况下k = F-2,对于奇数阶基本阿贝尔p组E的每个直接乘积,简单的Mackey函子S-E,S-F2必须作为过滤因子出现在F-2圈乘以(Z)B中。

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