Finite Hurwitz braid group actions for Artin groups

Finite Hurwitz braid group actions for Artin groups
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Artin 群的有限 Hurwitz 辫子群动作

DOI:
10.1007/bf02803499
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发表时间:
2004
影响因子:
1
通讯作者:
Stephen P. Humphries
Stephen P. Humphries
中科院分区:
数学2区
文献类型:
--
作者:
Stephen P. Humphries

文献摘要

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我们证明了(除了两个可能的例外)不可约Artin群的标准生成元序列上的Hurwitz辫子群作用有有限轨道当且仅当Artin群是有限类型的(即对应的Coxeter群是有限的)。
We prove that (with two possible exceptions) the Hurwitz braid group action on the sequence of standard generators of an irreducible Artin group has a finite orbit if and only if the Artin group is of finite type (i.e., the corresponding Coxeter group is finite).