O. V. Ogievetsky, L. Poulain d`Andecy. Alternating subalgebras of Hecke algebras and alternating subgroups of braid groups
Natural Sciences / Mathematics / Algebra
Submitted on: Sep 12, 2012, 17:30:30
Description: For a Coxeter system (G,S) the multi-parametric alternating subalgebra H^+(G) of the Hecke algebra and the alternating subgroup B^+(G) of the braid group are defined. Two presentations for H^+(G) and B^+(G) are given; one generalizes the Bourbaki presentation for the alternating subgroups of Coxeter groups, another one uses generators related to edges of the Coxeter graph.