Homology computations for complex braid groups

  • Filippo Callegaro

    Scuola Normale Superiore, Pisa, Italy
  • Ivan Marin

    Université Denis Diderot - Paris 7, France


Complex braid groups are the natural generalizations of braid groups associated to arbitrary (finite) complex reflection groups. We investigate several methods for computing the homology of these groups. In particular, we get the Poincaré polynomial with coefficients in a finite field for one large series of such groups, and compute the second integral cohomology group for all of them. As a consequence we get non-isomorphism results for these groups.

Cite this article

Filippo Callegaro, Ivan Marin, Homology computations for complex braid groups. J. Eur. Math. Soc. 16 (2014), no. 1, pp. 103–164

DOI 10.4171/JEMS/429