Stefano Urbinati:
Log Terminal Singularities (joint work with A. Chiecchio)
Time and place
Friday, 8.3.13, 10:00-11:00, Raum 404, Eckerstr. 1
Abstract
Inspired by the work of de Fernex and Hacon on singularities of normal varieties (2009), we define a new notion for Log Terminal singularities. In this context we prove that the relative canonical ring is finitely generated and that log terminal varieties are klt in the usual sense if and only if the anti-canonical ring is finitely generated. We deduce a relation to the Minimal Model Program and some interesting features on defect ideals.