Seminar: Symplektische Geometrie / Symplectic Geometry — Wintersemester 2018-19, HU Berlin

This is a working group seminar run by Klaus Mohnke and Chris Wendl on recent developments in symplectic geometry. Participants are expected to be familiar with the basics of symplectic geometry, including some knowledge of holomorphic curves and/or Floer-type theories. The seminar is conducted in English.

As in past semesters, we will switch the time of the seminar this semester to Mondays, 15:00-17:00 (c.t.) in room 1.315 at Rudower Chaussee 25. It will occasionally be preempted by the Berlin-Hamburg Symplectic Geometry Seminar.

Monday October 15, 2018 no seminar (dies academicus)
Monday October 22, 2018
15:00-17:00 (c.t.)
RUD 25, Room 1.315
Speaker: Marc Kegel
Topic: Parallelizability of 3-manifolds via surgery
Abstract: Every 3-manifold is parallelizable, i.e. admits three linearly independent vector fields. In this talk, we will discuss new proofs of this classical result using surgery descriptions of 3-manifolds. To understand this talk, only basic knowledge on manifolds and their homology and fundamental groups are required. This is joint work with S. Durst, H. Geiges, and J. Gonzalo.
Monday October 29, 2018 no seminar
Monday November 5, 2018
15:00-17:00 (c.t.)
RUD 25, Room 1.315
Speaker: Marc Kegel
Topic: Parallelizability of 3-manifolds via surgery (continuation)
Monday November 12, 2018 Berlin-Hamburg Symplectic Geometry Seminar (in Berlin)
Monday November 19, 2018
15:00-17:00 (c.t.)
RUD 25, Room 1.315
Speaker: Felix Nötzel
Topic: Morse-Bott property of the action functional in symplectisations
Abstract: In order to find periodic Reeb orbits in a contact manifold, one can study their symplectisations and punctured pseudoholomorphic curves and their asymptotic behaviour. I will explain that in the Morse-Bott case the action functional is a Morse-Bott function on a loop space and how this property can be used to show that at each puncture the pseudoholomorphic curves converge to a Reeb orbit.
Monday November 26, 2018
15:00-17:00 (c.t.)
RUD 25, Room 1.315
Speaker: Jonathan Bowden (Monash University)
Topic: Symplectic caps of higher-dimensional contact manifolds
Monday December 3, 2018
15:00-17:00 (c.t.)
RUD 25, Room 1.315
Speaker: Felix Nötzel
Topic: Morse-Bott property of the action functional in symplectizations (continued)
Monday December 10, 2018 Berlin-Hamburg Symplectic Geometry Seminar (in Hamburg)
Monday December 17, 2018
15:00-17:00 (c.t.)
RUD 25, Room 1.315
no seminar (Weihnachtsfeier)
Monday January 7, 2018
15:00-17:00 (c.t.)
RUD 25, Room 1.315
Speaker: Dingyu Yang
Topic: Introduction to Kuranishi structures
Monday January 14, 2018 Berlin-Hamburg Symplectic Geometry Seminar (in Berlin)
Monday January 21, 2018
15:00-17:00 (c.t.)
RUD 25, Room 1.315
Speaker: Dingyu Yang
Topic: Kuranishi structures (continued)
Monday January 28, 2018
15:00-17:00 (c.t.)
RUD 25, Room 1.315
Speaker: TBA
Topic: TBA
Monday February 4, 2018
15:00-17:00 (c.t.)
RUD 25, Room 1.315
Speaker: TBA
Topic: TBA
Monday February 11, 2018
15:00-17:00 (c.t.)
RUD 25, Room 1.315
Speaker: TBA
Topic: TBA

Other symplectic events going on this semester

last semester's symplectic seminar