The Representation Ring of the Twisted Quantum Double of a Finite Group
The Representation Ring of the Twisted Quantum Double of a Finite Group
复制标题
有限群扭曲量子双体的表示环
DOI:
10.4153/cjm-1996-070-6
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发表时间:
1996
期刊:
影响因子:
--
通讯作者:
S. Witherspoon
中科院分区:
文献类型:
--
作者:
S. Witherspoon
Abstract We provide an isomorphism between the Grothendieck ring of modules of the twisted quantum double of a finite group, and a product of centres of twisted group algebras of centralizer subgroups. It follows that this Grothendieck ring is semisimple. Another consequence is a formula for the characters of this ring in terms of representations of twisted group algebras of centralizer subgroups.