English

On a theorem of Artin

Group Theory 2007-05-23 v1

Abstract

We determine the epimorphisms AWA \to W from the Artin group AA of type Γ\Gamma onto the Coxeter group WW of type Γ\Gamma, in case Γ\Gamma is an irreducible Coxeter graph of spherical type, and we prove that the kernel of the standard epimorphism is a characteristic subgroup of AA. This generalizes an over 50 years old result of Artin.

Keywords

Cite

@article{arxiv.math/0204242,
  title  = {On a theorem of Artin},
  author = {Arjeh M. Cohen and Luis Paris},
  journal= {arXiv preprint arXiv:math/0204242},
  year   = {2007}
}
R2 v1 2026-07-22T16:44:41.345Z