A Hodge filtration of logarithmic vector fields for well-generated complex reflection groups
arXiv:1809.05026
Abstract
Given an irreducible well-generated complex reflection group, we construct an explicit basis for the module of vector fields with logarithmic poles along its reflection arrangement. This construction yields in particular a Hodge filtration of that module. Our approach is based on a detailed analysis of a flat connection applied to the primitive vector field. This generalizes and unifies analogous results for real reflection groups.
20 pages, v2: minor corrections. Final version, to appear in J. Comb. Algebra