Christian Lange: "Periodic flows and geometric realizations"

mercredi 19 févr. 2020, 14:00 → 15:00 Europe/Paris

435 (UMPA)

In the talk we discuss constructions and non-existence results for
periodic Reeb flows and more geometric geodesic flows. Several statements in the talk rely on the notion of an orbifold. We will take some time to explain
different ways to think of them and their respective advantages.