Non-reductive geometric invariant theory and Thom polynomials
arXiv:2012.06425
Abstract
We combine recently developed intersection theory for non-reductive geometric invariant theoretic quotients with equivariant localisation to prove a formula for Thom polynomials of Morin singularities. These formulas use only toric combinatorics of certain partition polyhedra, and our new approach circumvents the poorly understood Borel geometry of existing models.
56 pages, 3 Figures