# Oberseminar Geometrie und Analysis

## Bevorstehende Vorträge im Oberseminar

27.06.2024, 00:00 Uhr

**Souheib Allout** (Bochum University):**On partially hyperbolic diffeomorphisms in dimension three via a notion of autonomous dynamics**

## Vergangene Vorträge

13.06.2024, 14:30 Uhr

**Yuan Yao** (Sorbonne University):**Anchored symplectic embeddings**

16.05.2024, 10:30 Uhr

**Wilhelm Klingenberg** (Durham University):**A proof of the Toponogov conjecture**

08.05.2024, 10:30 Uhr

**Bernhard Albach** (RWTH Aachen):**On the number of geodesics on S2 (Part 2)**

02.05.2024, 10:30 Uhr

**Bernhard Albach** (RWTH Aachen):**On the number of geodesics on S2**

25.04.2024, 10:30 Uhr

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

14.12.2023, 14:30 Uhr

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

30.11.2023, 14:30 Uhr

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

16.11.2023, 10:30 Uhr

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

09.11.2023, 10:30 Uhr

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

02.11.2023, 10:30 Uhr

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

29.06.2023, 15:45 Uhr

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

29.06.2023, 14:15 Uhr

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

04.05.2023, 10:30 Uhr

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

27.04.2023, 15:00 Uhr

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

20.04.2023, 14:30 Uhr

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

08.12.2022, 17:45 Uhr

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

08.12.2022, 16:15 Uhr

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

13.10.2022, 16:15 Uhr

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

28.07.2022, 16:15 Uhr

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

14.07.2022, 16:15 Uhr

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

07.07.2022, 16:15 Uhr

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

15.06.2022, 13:15 Uhr

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

12.05.2022, 16:15 Uhr

**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 Uhr

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

28.04.2022, 16:15 Uhr

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

21.04.2022, 16:15 Uhr

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

07.04.2022, 16:15 Uhr

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

16.12.2021, 15:15 Uhr

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

16.12.2021, 14:15 Uhr

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

02.12.2021, 15:00 Uhr

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

17.11.2021, 16:00 Uhr

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

11.11.2021, 13:00 Uhr

**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 Uhr

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

21.10.2021, 15:00 Uhr

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

28.11.2019, 16:30 Uhr

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

08.11.2019, 14:00 Uhr

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

31.10.2019, 16:30 Uhr

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

24.10.2019, 16:30 Uhr

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

17.10.2019, 16:30 Uhr

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

11.10.2019, 10:30 Uhr

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