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Automorphisms of large-type free-of-infinity Artin groups

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arxiv 2304.06666 v2 pith:FEXSFZX3 submitted 2023-04-13 math.GR

classification math.GR
keywords groupsartinautomorphismfree-of-infinitylarge-typealgebraicassociatedautomorphisms
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We compute explicitly the automorphism and outer automorphism group of all large-type free-of-infinity Artin groups. Our strategy involves reconstructing the associated Deligne complexes in a purely algebraic manner, i.e. in a way that is independent from the choice of standard generators for the groups.

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