Some subgroups of Artin's braid group
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Sandro Manfredini
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Article
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1997
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Elsevier Science
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English
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Let ~3,~ be the braid group on n strings and let q5 : %n -+ S,~ be the standard homomorphism of ~3,~ onto the group of permutations of the set {1,..., n}. In this paper the author calculates, using the Reidemeister-Schreier method, a presentation for the subgroups ~,~,p of ~3n whose image ~,(~3n,p)