Braid groups of normalizers of reflection subgroups
Braid groups of normalizers of reflection subgroups
Let W 0 be a reflection subgroup of a finite complex reflection group W, and let B 0 and B be their respective braid groups. In order to construct a Hecke algebra H ˜ 0 for the normalizer N W (W 0 ), one first considers a natural subquotient B …