# Post Graduate Seminar Geometry and Analysis

## Upcoming Talks in Post Graduate Seminar

25.04.2024, 14:30**Location:**

Besprechungsraum 203

(Pontdriesch 14-16)

**Simon Vialaret** (Université Paris-Saclay):**Sharp systolic inequalities for invariant contact forms on S1-principal bundles**

## Past Talks

14.12.2023, 14:30

**Dustin Connery-Grigg** (IMJ-PRG):**Spectral invariants and dynamics of low-dimensional Hamiltonian systems**

30.11.2023, 14:30

**Emilia Alves** (Universidade Federal Fluminense, Brazil):**Intersection of real Bruhat cells**

16.11.2023, 10:30

**Leonardo Masci** (RWTH Aachen):**A Poincaré-Birkhoff theorem for asymptotically linear Hamiltonian systems**

09.11.2023, 10:30

**Marcelo Alves** (University of Antwerp):**C0-stability of topological entropy for 3-dimensional Reeb flows**

02.11.2023, 10:30

**Urs Fuchs** (RWTH Aachen):**A primer on circle packings**

29.06.2023, 15:45

**Michael Hutchings** (University of California, Berkeley):**Unknotted Reeb orbits and the first ECH capacity**

29.06.2023, 14:15

**Patrice Le Calvez** (Sorbonne Université):**Non-contractible periodic orbits for area preserving surface homeomorphisms**

04.05.2023, 10:30

**Jacob Rasmussen** (University of Cambridge):**Floer homology for knots in the solid torus (joint seminar with EDDy)**

27.04.2023, 15:00

**Murat Sağlam** (Universität zu Köln):**Contact 3-manifolds with integrable Reeb flows**

20.04.2023, 14:30

**David Bechara Senior** (RWTH Aachen):**The asymptotic action of area preserving disk maps and some of its properties**

08.12.2022, 17:45

**Rohil Prasad** (Princeton University):**Volume-perserving right-handed vector fields are conformally Reeb**

08.12.2022, 16:15

**Abror Pirnapasov** (ENS Lyon):**The mean action and the Calabi invariant**

13.10.2022, 16:15

**Valerio Assenza** (Universität Heidelberg):**Magnetic Curvature and Existence of Closed Magnetic Geodesics**

28.07.2022, 16:15

**Urs Frauenfelder** (Universität Augsburg):**GIT quotients and Symmetric Periodic Orbits**

14.07.2022, 16:15

**Luca Asselle** (Ruhr-Universität Bochum):**CANCELED**

07.07.2022, 16:15

**Urs Frauenfelder** (Universität Augsburg):**CANCELED**

15.06.2022, 13:15

**Benoit Joly** (Ruhr-Universität Bochum):**Barcodes for Hamiltonian homeomorphisms of surfaces**

12.05.2022, 16:15

**Alberto Abbondandolo** (Ruhr-Universität Bochum):**Bi-invariant Lorentz-Finsler structures on the linear symplectic group and on the contactomorphism group**

06.05.2022, 14:00

**Tobias Soethe** (RWTH Aachen):**Sharp systolic inequalities for rotationally symmetric 2-orbifolds - Part II**

28.04.2022, 16:15

**Tobias Soethe** (RWTH Aachen):**Sharp systolic inequalities for rotationally symmetric 2-orbifolds**

21.04.2022, 16:15

**Alberto Abbondandolo** (Ruhr Universität Bochum):**CANCELED**

07.04.2022, 16:15

**Erman Çineli** (IMJ-PRG):**Topological entropy of Hamiltonian diffeomorphisms: a persistence homology and Floer theory perspective**

16.12.2021, 15:15

**Matthias Meiwes** (RWTH Aachen):**Braid stability and Hofer's metric**

16.12.2021, 14:15

**Lucas Dahinden** (Universität Heidelberg):**The Bott-Samelson Theorem for positive Legendrian Isotopies**

02.12.2021, 15:00

**Marco Mazzucchelli** (ENS Lyon):**Existence of global surfaces of section for Kupka-Smale 3D Reeb flows**

17.11.2021, 16:00

**Yuri Lima** (Universidade Federal do Ceará):**Symbolic Dynamics for Maps with Singularities in High Dimension**

11.11.2021, 13:00

**Pedro Salomão** (Universidade de São Paulo):**Genus zero global surfaces of section for Reeb flows and a result of Birkhoff**

04.11.2021, 15:00

**Gabriele Benedetti** (VU Amsterdam):**The dynamics of strong magnetic fields on surfaces: periodic orbits and trapping regions**

21.10.2021, 15:00

**Jungsoo Kang** (Seoul National University):**Symplectic Homology of Convex Domains**

28.11.2019, 16:30

**Stefan Suhr** (Ruhr-Universität Bochum):**New developments in the theory of Lyapunov functions for cone fields**

08.11.2019, 14:00

**Barney Bramham** (Ruhr-Universität Bochum):**Symbolic Dynamics for Reeb Flows**

31.10.2019, 16:30

**Anna Florio** (IMJ-PRG):**Torsion of Conservative Twist Maps on the Annulus**

24.10.2019, 16:30

**Marcelo Alves** (Université Libre de Bruxelles):**Symplectic invariants and topological entropy of Reeb flows**

17.10.2019, 16:30

**Gabriele Benedetti** (Universität Heidelberg):**Periodic motions of a charged particle in a stationary magnetic field**

11.10.2019, 10:30

**Louis Merlin** (RWTH Aachen University):**Global invariants of symmetric spaces**