Higher Signs for Coxeter Groups

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摘要 We define and study cocycles on a Coxeter group in each degree generalizing the sign function.When the Coxeter group is a Weyl group,we explain how the degree three cocycle arises naturally from geometric representation theory.

作者 Zhiwei Yun

机构地区 Department of Mathematics

出处《Peking Mathematical Journal》 2021年第2期285-303,共19页 北京数学杂志（英文）

关键词 Coxeter groups COCYCLES Hecke category

分类号 O15 [理学—基础数学]

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Peking Mathematical Journal

2021年第2期

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Higher Signs for Coxeter Groups

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