Upcoming Events Regular Events BACH Seminar on Symplectic and Contact Geometry Next meeting: Cologne, 20 October 2023 Workshops, Conferences, Schools Ph.D. Student Retreat Heidelberg, 02 - 06 October 2023 Geometric and Topological Properties of Random Algebraic Varieties Cologne, 04 - 06 October 2023 Lie Group Actions in Complex Analysis Bochum, 02 - 03 November 2023 Representation Theory in Cologne Cologne, 08 - 09 December 2023