On the direct indecomposability of infinite irreducible coxeter groups and the isomorphism problem of coxeter groups

研究成果: Contribution to journalArticle査読

7 被引用数 (Scopus)

抄録

In this article, we prove that any irreducible Coxeter group of infinite order, which is possibly of infinite rank, is directly indecomposable as an abstract group. The key ingredient of the proof is that we can determine, for an irreducible Coxeter group W , the centralizers in W of the normal subgroups of W that are generated by involu-tions. As a consequence, the problem of deciding whether two general Coxeter groups are isomorphic is reduced to the case of irreducible ones. We also describe the automorphism group of a general Coxeter group in terms of those of its irreducible components.

本文言語英語
ページ(範囲)2559-2595
ページ数37
ジャーナルCommunications in Algebra
34
7
DOI
出版ステータス出版済み - 6 1 2006
外部発表はい

All Science Journal Classification (ASJC) codes

  • 代数と数論

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