Berlin-Hamburg-Seminar am 20.1.2020
Jonny Evans (Lancaster) You can't squeeze a (Lagrangian) Klein bottle
Give S2 the area form with area 4π. I will show that there is a Lagrangian Klein bottle in [0,1] x S1 x S2 but not in (0,1) x S1 x S2.
Zhengyi Zhou (IAS) Symplectic fillings of asymptotical dynamically convex manifolds
I will introduce the concept of k-dilation on symplectic
cohomology, which generalizes the vanishing of symplectic cohomology
and symplectic dilation. The existence of k-dilation is independent of
certain fillings for a class of contact manifolds admitting only the
trivial augmentation, called asymptotically dynamically convex
manifolds. Then I will derive some consequences on uniqueness and
existence of fillings, embeddings, and cobordisms.