Counterexample to the Generalized Bogomolov-Gieseker Inequality for Threefolds
arXiv:1602.05055 · doi:10.1093/imrn/rnw122
Abstract
We give a counterexample to the generalized Bogomolov-Gieseker inequality for threefolds conjectured by Bayer, Macrì and Toda using the blow up of a point over three dimensional projective space.
3 pages, comments welcome