University of Toronto's Symplectic Geometry Seminar

Abstract: I will talk about the preprint math.SG/0404413. Philosophy: To every nice stratification of a Hamiltonian K-manifold should be a localization theorem. Although the norm-square of the moment map is not Morse-Bott, there is a nice stratification associated to it by Kirwan and Ness. I will describe a short proof of the localization theorem associated to this stratification, suggested by Witten and originally proved by Paradan.