A note on the Unit Groups of Burnside Rings as Burnside Ring Modules

A note on the Unit Groups of Burnside Rings as Burnside Ring Modules
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关于作为燃烧器环模块的燃烧器环单元组的说明

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发表时间:
1986
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通讯作者:
Toshimitsu Matsuda
Toshimitsu Matsuda
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作者:
Toshimitsu Matsuda

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E.设G是有限群,SetfG是所有有限G-集的同构类的集合.然后SetfG是一个半环,其加法和乘法分别由不相交并和卡氏积诱导。定义伯恩赛德环A(G)为SetfG的Grothendieck环.设A(G)* 是A(G)中的单位群。对于固定的TESetfG,我们有一个指数映射()T:SetfG-SetfG(S1-ST),其中S' ={f:T-S]f;集合论映射},G-作用g。f:T-S(t ]-+gLIC(g-it))。
E. Imetroduction Let G be a finite group and SetfG the set of isomorphism classes of all finite G-sets. Then SetfG is a semi-ring with addition and multiplication induced by the disjoint union and the cartesian product, respectively. The Burnside ring A(G) is defined to be the Grothendieck ring of SetfG. Let A(G)* be the group of units in A(G). For a fixed TESetfG, we have an exponential map ( )T:SetfG-SetfG (Sl-ST) where S' ={f:T-S]f; set theoretic map} with G-action g. f: T-S (t ]---+gLIC(g-it)).