Heidelberg Geometry Seminars and related events
Winter semester 2021/2022

The Geometry Seminar (GS) is the common seminar of the Research Station Geometry and Dynamics (consisting of the Differential Geometry Group and the Symplectic Geometry Group). It takes place every other Tuesday, usually at 1 p.m. in room SRB. Before the seminar, we usually have lunch together. For the moment, we switched to online seminars again.

The Differential Geometry Seminar (DGS) takes place on Thursdays. When in person, we usually meet at 2 p.m. in room SR 5. Our online meetings are usually at 5 p.m., e.g. when the speaker is in a different time zone like the USA. Please see the seminar webpage for further details.

The Symplectic Geometry Seminar (SGS) takes place on Wednesdays at 11:15 in room SR 9. Some talks are online instead.

The RTG Colloquium (RTG) is organized together with people from Karlsruhe. It is part of the RTG days which take place every other Tuesday, alternating between Karlsruhe and Heidelberg.

Additional events are listed in the second table.

If you would like to suggest a speaker, or if you want an event promoted on this webpage, please contact one of the organizers:
Geometry Seminar: Max Riestenberg and Irene Seifert
Differential Geometry seminar: Gabriele Viaggi, Mitul Islam and Beatrice Pozzetti
Symplectic Geometry seminar: Lucas Dahinden
RTG Colloquium: Lucas Dahinden and Georgios Kydonakis

Date and time Speaker Title Seminar
Thursday, September 23rd, 10:30 am (note the unusual time!), Hörsaal or video life stream Ferrán Valdez (Centro de Ciencias Matemáticas, UNAM) Conjugacy classes of big Mapping Class Groups GS
Monday, October 11th, 1 pm (note the unusual day!), SR 3 Jialun Li (Zürich) Exponential mixing of geodesic flow for geometrically finite manifolds with cusps GS
Tuesday, October 19th, in Karlsruhe Tatiana Smirnova-Nagnibeda (Université de Genève) Spectra and spectral measures on Cayley graphs of finitely generated groups and their actions RTG
Thursday, October 21st
Annette Karrer (Technion) Contracting boundaries of right-angled Coxeter groups DGS
Tuesday, October 26th Bram Petri (Sorbonne) Extremal hyperbolic surfaces and the Selberg trace formula GS
Thursday, October 28th
Pierre-Louis Blayac (MPIM) The proximal limit set of divisible convex sets DGS
Tuesday, November 2nd Jungsoo Kang (Seoul) Symplectic geometry of convex domains RTG
Thursday, November 4th
Feng Zhu (Technion) Relatively Anosov representations: three characterisations DGS
Tuesday, November 9th Lei Zhao (Augsburg) Conformal Transformations and Integrable Mechanical Billiards GS
Wednesday, November 10th, 15:15 in Zoom Hassan Najafi Alishah (Minas Gerais) Dirac geometry and conservative Lotka-Volterra equations SGS
Thursday, November 11th
Brian Collier (UC Riverside) Slodowy slices, Higgs bundles and higher Teichmüller spaces DGS
Tuesday, November 16th, in Karlsruhe Bruno Martelli (Università di Pisa) Hyperbolic manifolds of dimension higher than 3 RTG
Thursday, November 18th
Rym Smai (U Avignon) Conformally flat spacetimes with complete photons DGS
Tuesday, November 23th Marek Kaluba (Karlsruhe) Squaring the Laplacian and property (T) GS
Tuesday, November 30th Florent Schaffhauser (Universidad de los Andes) Hodge and Betti numbers of real algebraic varieties, a walk through a few examples RTG
Wednesday, December 1st Samanyu Sanjay (Aachen) Some symplectic obstructions to Weinstein fillability in high dimensions SGS
Thursday, December 2nd
Pratyush Sarkar (Yale) Local mixing of diagonal flows on Anosov homogeneous spaces DGS
Tuesday, December 7th, via Zoom Alfonso Sorrentino (Rome) On the persistence of Lagrangian periodic tori for symplectic twist maps GS
Wednesday, December 8th, in Zoom Comlan E. Koudjinan (IST Austria) On non coexistence of 2 & 3-rational caustics in nearly circular billiard tables SGS
Thursday, December 9th
Theodore Weisman (UT Austin) Title tba DGS
Tuesday, December 14th, in Karlsruhe Cyril Houdayer (Université Paris-Saclay) Noncommutative ergodic theory of higher rank lattices RTG
Thursday, December 16th
Alessandro Sisto (Heriot-Watt University) Title tba DGS
Tuesday, January 11th, in Zoom Gabriele Benedetti (Amsterdam) A bi-invariant Lorentz-Finsler structure in symplectic geometry RTG
Wednesday, January 12th, in Zoom Thibaut Mazuir (Sorbonne) Higher algebra of A-infinity algebras in Morse theory SGS
Monday, January 17th
Xenia Flamm (ETH) The real spectrum compactification of the Hitchin component DGS
Tuesday, January 18th Markus Reineke (Bochum) Symplectic reduction and neural networks GS
Wednesday, January 19th, in Zoom Valdo Tatitscheff (Strasbourg) Hecke algebras and two-dimensional topological quantum field theories SGS
Thursday, January 20th
Matteo Migliorini (University of Pisa) Hyperbolic manifolds fibering over S^1 DGS
Tuesday, January 25th, in Karlsruhe Yash Lodha (Universität Wien) Adventures in the land of Homeo+(R) RTG
Tuesday, February 1st (postponed to May 3rd) Gerhard Knieper (Bochum) Title tba GS
Tuesday, February 8th in Zoom Hannah Markwig (Universität Tübingen) Curve counting and tropical geometry RTG
Thursday, February 10th
Tushar Das (U Wisconsin-La Crosse) Title tba DGS
Tuesday, February 15th Sébastien Labbé (Bordeaux) Structure of Jeandel-Rao aperiodic Wang tilings GS
Wednesday, February 16th Matthias Meiwes (Aachen) TBA SGS

Archive of past seminars: Summer 2021 | Winter 2020/21 | Summer 2020 | Winter 2019/20 | Summer 2019 | Winter 2018/19 | Summer 2018 | Winter 2017/18 | Summer 2017 | Winter 2016/17| Combined Archive

The following table shows additional math-events.

Date/Place Event
Weekly, Monday 4-6 pm Junior Seminar on Geometry & Dynamics
Weekly, Wednesday 14:15-15:45 Symplectic Topics Seminar
October 4th-6th, online Second Workshop on Topological Methods in Data Analysis
October 7th-8th, IWH RTG Seminar "PhD students' own research"

Heidelberg Geometry Seminar