Laboratoire des mathématiques Jean Leray, Université de Nantes
Date(s) : 22/04/2021 iCal
14 h 00 min - 15 h 00 min
Planar contact 3-manifolds, those supported by an open book with genus-0 pages, are fairly special. The goal of the talk is to show that the canonical contact structure on the link of a normal complex surface singularity is planar if and only if the singularity has reduced fundamental cycle.
This is joint work with Paolo Ghiggini and Olga Plamenevskaya.