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Universal deformations of the finite quotients of the braid group on 3 strands. (English) Zbl 1345.20048

Summary: We prove that the quotients of the group algebra of the braid group on 3 strands by a generic quartic and quintic relation respectively have finite rank. This is a special case of a conjecture by Broué, Malle and Rouquier for the generic Hecke algebra of an arbitrary complex reflection group. Exploring the consequences of this case, we prove that we can determine completely the irreducible representations of this braid group of dimension at most 5, thus recovering a classification of Tuba and Wenzl in a more general framework.

MSC:

20F36 Braid groups; Artin groups
20C08 Hecke algebras and their representations

Citations:

Zbl 1056.20025

Software:

CHEVIE

References:

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