Speaker: Claus Hertling Date: 10:30 27/11/2020 Title: Periods and a Torelli conjecture for isolated hypersurface singularities Abstract: The talk is a survey on my Torelli type conjecture for isolated hypersurface singularities. It says that such a singularity is determined up to coordinate changes by its Brieskorn lattice + topological data. It is proved for the singularities with modality less or equal to 2. An infinitesimal and a variational Torelli result hold, too. A stronger version uses a classifying space for Brieskorn lattices and a moduli space for marked singularities.