The Geometry Seminar (GS) is the common seminar of the Differential Geometry Group and the Symplectic Geometry Group. It takes place on Tuesdays, usually at 13:00.
The Differential Geometry Seminar (DGS) takes place on Thursdays at 14:00.
The Symplectic Geometry Seminar (SGS) takes place via Zoom on Wednesdays at 11:15. Please join Müsli to receive the link per email.
The RTG Colloquium (RTG) is organized together with people from Karlsruhe. Please note that this year, the colloquium is separate from the RTG days.
It takes place on Tuesdays, starting at 2:00 with a get together with the speaker, at 2:30 is a coffee break followed by the talk at 2:45 (NOTE THE SHIFT FROM EARLIER).
More details about the RTG Colloquium can be found here.
Additional events are listed in the second table.
Please contact one of the organizers James Farre, Lucas Dahinden or Irene Seifert if you would like to suggest a speaker, or if you want an event promoted on this webpage.
Date and time  Speaker  Title  Seminar 

Tue 20 April  RTG Lecture  Lecture  RTG 
Tue 27. April  Tsachik Gelander (Rehovot)  TBA  RTG Colloquium 
Tue 4. Mai  RTG Lecture  Lecture  RTG 
Tue 11. Mai  Yair Minsky (Yale)  TBA  RTG Colloquium 
Tue 18. Mai  RTG Lecture  Lecture  RTG 
Tue 25. Mai  Louis Merlin (Aachen)  On the relations between the universal Teichmüller space and AntideSitter geometry  GS 
Tue 1. June  RTG Lecture  Lecture  RTG 
Tue 8. June  Tom Bridgeland (Sheffield)  TBA  RTG Colloquium 
Tue 15. June  RTG Lecture  Lecture  RTG 
Tue 22. June (1 hour later than usual)  Nir Lazarovich (Haifa)  TBA  RTG Colloquium 
Tue 29. June  RTG Lecture  Lecture  RTG 
Tue 6. July  Colin Guillarmou (Orsay)  Spectral theory of higher rank Anosov action and SRB measures  GS 
Tue 13. July (11am, Hörsaal)  Richard Schwartz (Providence)  The spheres of sol  GS 
Tue 13. July  Hugo Parlier (Luxembourg)  Curves, surfaces and intersection  GS 
Thu 15. July (11am, Hörsaal)  Michael Harrison (Pittsburgh)  BorsukUlam and some applications  old and new  GS 
Thu 15. July (2pm)  Anastasiia Sharipova (Penn state)  Viterbo's conjecture for the EkelandHoferZehnder capacity  SGS 
Tue 20. July (Unusual time 15:00)  Simion Filip (Chicago)  A cyclotomic family of thin hypergeomteric groups  GS 
Wed 21. July  Johann Bouilly (Strassbourg)  Torelli group action on SU(n)character varieties  SGS 
Date/Place  Event 

Weekly, Monday 46 pm  Junior Geometry Seminar 
Weekly, Wednesday 14:1515:45  Symplectic Topics Seminar 
The Geometry Seminar (GS) is the common seminar of the Differential Geometry Group and the Symplectic Geometry Group. It takes place on Tuesdays, usually at 13:00.
The Differential Geometry Seminar (DGS) takes place on Thursdays at 14:00.
The Symplectic Geometry Seminar (SGS) takes place via Zoom on Wednesdays at 11:15. Please join Müsli to receive the link per email.
The RTG Colloquium (RTG) is organized together with people from Karlsruhe. Please note that this year, the colloquium is separate from the RTG days.
It takes place via Zoom on Tuesdays, starting at 2:00 with a get together with the speaker, at 2:30 is a coffee break followed by the talk at 3:00.
More details about the RTG Colloquium can be found here.
Additional events are listed in the second table.
Please contact one of the organizers Jan Swoboda, Lucas Dahinden or Irene Seifert if you would like to suggest a speaker, or if you want an event promoted on this webpage.
Date/Place  Event 

Weekly, Monday 46 pm  Junior Geometry Seminar 
The Geometry Seminar (GS) is the common seminar of the Differential Geometry Group and the Symplectic Geometry Group. It takes place Tue in Seminarraum B at 13:00.
The Differential Geometry Seminar (DGS) takes place Thu in Seminarraum 5 at 14:00 and Mon in Seminarraum 3 at 9:45.
The Symplectic Geometry Seminar (SGS) takes place in Zoom at 11:15. Please join Müsli to receive the link per email.
The RTG Colloquium (RTG) is held alternately in Karlsruhe (KA) and Heidelberg (HD). In Heidelberg it takes place in Room 5.104 at 13:30.
More details about the RTG Colloquium can be found here.
Additional events are listed in the second table.
Please contact one of the organizers Johannes Horn or Lucas Dahinden if you would like to suggest a speaker, or if you want an event promoted on this webpage.
Date and time  Speaker  Title  Seminar 

Wed April 22  Lucas Dahinden (Heidelberg)  Topological robotics  SGS 
Tue April 28  Peter Albers (Heidelberg)  Introduction to Symplectic Billiards  GS 
Wed April 29  Arnaud Maret (Heidelberg)  Ergodicity and character varieties  SGS 
Tue May 12  Gabriele Viaggi (Heidelberg)  Uniform models for random 3manifolds  GS 
Wed May 20  Arnaud Maret (Heidelberg)  KapovichMillson  SGS 
Tue May 26  Johannes Horn (Heidelberg)  sl(2)type singular fibers of symplectic Hitchin systems  GS 
Wed May 27  Eugenio Pozzoli (Sorbonne)  Controllability of molecular dynamics  SGS 
Wed June 24  Lucas Dahinden (Heidelberg)  Subriemannian Billiards  SGS 
Wed July 8  Kevin Wiegand (Heidelberg)  Cerf's theorem  SGS 
Wed July 15  Amin Mohebi (Heidelberg)  Celestial mechanics  SGS 
Date/Place  Event 

July 27  31 at IWH Heidelberg  Young Researcher’s Workshop on Positivity in Lie groups 
July 3  FHST Meeting on Geometry and Analysis 
July 20July 31  Summer school Geometric group theory without boundaries 
The Geometry Seminar (GS) is the common seminar of the Differential Geometry Group and the Symplectic Geometry Group. It takes place in Seminarraum C at 13:00.
The Differential Geometry Seminar (DGS) takes place Thu in Seminarraum 5 at 14:00 and Mon in Seminarraum 3 at 9:45.
The Symplectic Geometry Seminar (SGS) takes place in Seminarraum 9 at 11:15.
The RTG Colloquium (RTG) is held alternately in Karlsruhe (KA) and Heidelberg (HD). In Heidelberg it takes place in Room 5.104 at 13:30.
More details about the RTG Colloquium can be found here.
Additional events are listed in the second table.
Please contact one of the organizers Jonas Beyrer or Lucas Dahinden if you would like to suggest a speaker, or if you want an event promoted on this webpage.
Date  Event 

24.1.2020  Meeting on Geometry and Analysis 
Wed, 9.1510.45, SR9  Topics in Topological and Geometric Methods in Data Analysis 
Wed, 14.1516.45, SR4  Topics in Symplectic Geometry 
The Geometry Seminar (GS) is the common seminar of the Differential Geometry Group and the Symplectic Geometry Group. It takes place in Seminarraum C at 13:00.
The Differential Geometry Seminar (DGS) takes place in Seminarraum 3 at 11:15.
The Symplectic Geometry Seminar (SGS) takes place in Seminarraum 9 at 11:15.
The Junior Geometry Seminar (JGS) takes place in Seminarraum 3 at 11:15.
The RTG Colloquium (RTG) is held alternately in Karlsruhe (KA) and Heidelberg (HD). In Heidelberg it takes place in Room 5.104 at 13:30.
More details about the RTG Colloquium can be found here.
Additional events are listed in the second table.
Please contact one of the organizers Jonas Beyrer or Lucas Dahinden if you would like to suggest a speaker, or if you want an event promoted on this webpage.
Date and time  Speaker  Title  Seminar 

Tue Apr 16  Will Merry (ETHZ)  Symplectic cohomology of magnetic cotangent bundles  GS 
Tue Apr 30  Vaibhav Gadre (Glasgow)  Topics in Teichmuller dynamics  RTG HD 
Tue May 7  Martin Möller (Frankfurt)  Recursions for MasurVeech volumes via counting and via intersection theory  GS 
Thu May 9  Miguel Acosta (Luxemburg)  Fundamental domains in the complex hyperbolic plane and its boundary at infinity  DGS 
Fri May 10  Paul Gontschar (Heidelberg)  The geometry of Higman's group  JGS 
Tue May 14  Emily Stark (Technion)  Boundary maps in nonpositive curvature  RTG KA 
Tue May 21  Sobhan Seyfaddini (Paris)  Barcodes and C^{0} symplectic topology  GS 
Wed May 22  Markus Reineke (Bochum)  Cohomological Hall Algebras  SGS 
Thu May 23  JeanPhilippe Burelle (Paris)  Rigidity of diagonally embedded triangle groups  DGS 
Tue May 28  Pazit HaimKislev (Tel Aviv)  Symplectic size of polytopes  RTG HD 
Wed May 29  Pazit HaimKislev (Tel Aviv)  Closed characteristics on the boundary of convex polytopes  SGS 
Tue Jun 11  Herbert Edelsbrunner  Tripartition of and hole systems in a polyhedral complex  RTG KA 
Wed June 19  Lukas Sauer (Heidelberg)  Character varieties of 3manifolds as Lagrangian submanifolds  JGS 
Tue June 18  Alexander Thomas (Strasbourg)  A "flexible" generalisation of complex structures on surfaces  GS 
Tue Jun 25  Gabriela WeitzeSchmithüsen (Saarland)  Veech groups of coverings of the Baker's map surface  RTG HD 
Tue July 2  Lionel Pournin (Paris)  Recent geometric and combinatorial results on lattice polytopes  GS 
Wed July 3  Daniel Spitz (Heidelberg)  tba  JGS 
Wed July 3  Sergei Tabachnikov (PennState)  Elementary geometry is dead. Long live elementary geometry! (Part I)  SGS 
Thu July 4  Martin Bobb (Austin)  Decomposition of Convex Divisible Domains along Flats  DGS 
Tue July 9  Elena MäderBaumdicker  Willmore spheres are unstable  RTG KA 
Wed July 10  Balthazar Fléchelles (Heidelberg)  tba  JGS 
Wed July 10  Sergei Tabachnikov (PennState)  Elementary geometry is dead. Long live elementary geometry! (Part II)  SGS 
Fri July 12  Christian Seidel (Bochum)  Closed geodesics in compact Lorentzian manifolds of splitting type (15:30 In Room INF 205)  SGS 
Tue July 16  Alvaro del Pino (Utrecht)  Convex integration and the bracketgenerating condition  GS 
Wed July 17  Sergei Tabachnikov (PennState)  Frieze patterns  SGS 
Wed July 17  Alvaro del Pino (Utrecht)  Submanifolds of jet spaces and wrinkling (16:00 In SRA)  SGS 
Thu July 18  Steve Trettel (Santa Barbara)  Families of Geometries and Transitions  DGS 
Tue Jul 23  PierreEmmanuel Caprace (Louvain)  Quotients of discrete groups: finite versus infinite  RTG HD 
Wed July 24  Florent Schaffhauser (Strasbourg)  Mod 2 cohomology of moduli spaces of real vector bundles  DGS 
Wed July 24  Gustave Billon (Heidelberg)  tba  JGS 
Wed July 24  Sergei Tabachnikov (PennState)  Crossratio dynamics on ideal polygons  SGS 
Thu July 25  Tobias Weich (Paderborn)  RuelleTaylor resonances for higher rank Anosov actions  DGS 
Date  Event 

Feb 2528  Geometric topology meets geometric analysis 
Mar 28  Girl's day in Heidelberg 
Apr 13  RTG Block Seminar 
Apr 15  Geometry at Infinity 
Jun 1214  Workshop on Geometry, Topology and Computation 
Jul 19  Freiburg  Heidelberg  Stuttgart Geometric Analysis Seminar 
Jul 22  Jul 26  Geometric and analytic aspects of moduli spaces 
Jul 29  Aug 2  Workshop on Bounded Cohomology 
Aug 58  Persistent Homology, Summer school auf Schloß Rauischholzhausen 
The Geometry Seminar (GS) is the common seminar of the Differential Geometry Group and the Symplectic Geometry Group. It takes place in Seminarraum C at 13:00.
The Differential Geometry Seminar (DGS) takes place in Seminarraum 3 at 12:45.
The Symplectic Geometry Seminar (SGS) takes place in Seminarraum 4 at 16:00.
The Junior Geometry Seminar (JGS) takes place in Seminarraum 3 at 11:15.
The RTG Colloquium (RTG) is held alternately in Karlsruhe (KA) and Heidelberg (HD). In Heidelberg it takes place in Room 5.104 at 13:30.
More details about the RTG Colloquium can be found here.
Additional events are listed in the second table.
Please contact the organizers Lucas Dahinden and Andreas Ott if you would like to suggest a speaker, or if you want an event promoted on this webpage.
Date  Event 

Wed Oct 31, Thu Nov 8  Omega Alpha (Oct 31 Gießen, Nov 8 Heidelberg) 
Mon Nov 19  Persistence in Heidelberg (HITS) 
Nov 30  Geometry Day 
Feb 2528  Geometric topology meets geometric analysis 
The Geometry Seminar is the common seminar of the Differential Geometry group and the Symplectic Geometry group and it takes place on Tuesdays in Seminarraum C at 13:00.
The Differential Geometry Seminar takes place on Thursdays in Seminarraum C at 13:00.
The RTG colloquium takes place on Tuesdays in Room 5.104 at 13:30. More details about the RTG colloquium and the RTG days can be found here.
Please contact Federica Fanoni if you are interested in suggesting a speaker.
Both the Geometry Seminar and the RTG colloquium usually take place on
Tuesdays. The seminar usually takes place in Seminarraum C at 12:30. If
not, the alternative date or room is stated below. The RTG colloquium
takes place in Room 5.104 at 13:30. More details about the RTG
colloquium and the RTG days can be found here.
Please contact Federica Fanoni or Matthias Meiwes if you are interested in suggesting a speaker.
See here for the hompage of the Geometry Seminar for spring semester 2018.
Date  Speaker  Title  Type of talk 

Sep 21, 11:15  Irene Pasquinelli (Durham)  DeligneMostow lattices and cone metrics on the sphere  Seminar 
Oct 16, 14:00  Hiroshige Shiga (Tokyo)  An extension theorem for holomorphic motions and its application to Kleinian groups  Seminar 
Oct 17  Andreas Thom (Dresden)  RTG Karlsruhe  
Oct 24  Lorenzo Ruffoni (Bologna)  Bubbling complex projective structures with quasiFuchsian holonomy  Seminar 
Oct 2728  Geometric Dynamics Days  
Nov 7  Daryl Cooper (Santa Barbara)  Thurston's Compactification of Teichmüller Space  RTG Heidelberg 
Nov 14  Umberto Hryniewicz (Rio de Janeiro)  Using holomorphic curves to construct Conley blocks that obstruct hyperbolicity  Seminar 
Nov 21  Michael Björklund (Göteborg)  RTG Karlsruhe  
Nov 28  Marco Mazzucchelli (Lyon)  Minimal Boundaries in Tonelli Lagrangian Systems  Seminar 
Dec 1  Geometry Day, Heidelberg  
Dec 5  Valentina Disarlo (Heidelberg)  On the geometry of the flip graph  RTG Heidelberg 
Dec 9, 1pm, SR C  Robert Tang (Okinawa)  Veech surfaces and simple closed curves  Seminar 
Dec 12  Kai Zehmisch (Münster)  Oddsymplectic!  Seminar 
Dec 19  Steffen Kionke (Karlsruhe)  RTG Karlsruhe  
Jan 9  Anna Siffert (Bonn)  Harmonic maps between cohomogeneity one manifolds  RTG Heidelberg 
Jan 16  Jonas Beyrer (Zürich)  Cross ratios on Furstenberg boundaries  Seminar 
Jan 23  Miles Simon (Magdeburg)  RTG Karlsruhe  
Jan 30  Stefano Riolo (Pisa)  Hyperbolic Dehn filling in dimension four  Seminar 
Feb 6  Annette Werner (Frankfurt)  Limits of buildings and groups  RTG Heidelberg 
Heidelberg Geometry Seminar & RTG Colloquium schedule, Summer 2017
Heidelberg Geometry Seminar, 12:30  13:30, Seminarraum B.
Heidelberg RTG colloquium, 1:30  2:30.
Some other research talks associated with the Differentail Geometry Group or the Symplectic Geometry Group in Heidelberg are also listed. Date  Speaker  Title  Arrival/Departure  Talk type 

March 2017  
28 11:15, SR 4  Zhe Sun (Tsinghua)  Generalized Mcshane's identity on the FockGoncharov A moduli space  25.3  1.4  Seminar, Heidelberg 
April  
4 11:15, SR 4  Tengren Zhang (Caltech)  The Goldman symplectic form and the Hitchin component  1.4  6.4  Seminar, Heidelberg 
18 
Urs Frauenfelder (Augusburg)  Families of periodic orbits in the restricted three body problem and Arnold's ${J}^{+}$ invariant  1720.4  Seminar, Heidelberg 
25 

RTG, Karlsruhe 

28 

Geometry Day in Strasbourg 


May  
2 
Felix Schlenk (Neuchâtel)  Vielerlei Formen von Starrheit symplektischer Einbettungen  23.5  Seminar, Heidelberg 
3 14:15, SR 3 
Katharina Neusser (Praha)  Cprojective structures of degree of mobility at least two  2  14.5  Seminar, Heidelberg 
9 
Gabriele Mondello (Roma)  On the topology of the representation variety of a punctured surface group in $\mathrm{PSL}?(2,\mathbb{R})$  8  11.5  RTG, Heidelberg 
10 14:15, SR 3 Canceled 
Katharina Neusser (Praha)  Holonomy reductions of parabolic geometries and compactifications of geometric structures  2  14.5  Seminar, Heidelberg 
16 1:00 2:00, Conference Room 
Linus Kramer (Münster)  Rigidity of group topologies  15 17.5  Seminar, Heidelberg 
22 11:15, SR 7  Jeremy Toulisse (USC)  The geometry of maximal representations in $\mathrm{SO}?(2,n+1)$  21  23. 5  Seminar, Heidelberg 
23 

RTG, Karlsruhe 

26 11:15, SR 3  Florent Schaffhauser (Universidad de Los Andes)  Hitchin components for fundamental groups of 2orbifolds  24  27. 5  Seminar, Heidelberg 
30 

Special RTGDay  RTG, Karlsruhe 

June  
2 14:15  BochumHeidelbergKölnMünster Symplectic and Contact Geometry Seminar  main page. 


6 
Giannis Platis (Crete)  Quasiconformal mappings in the Heisenberg group: An overview  47.6  Seminar, Heidelberg 
13 
Javier Aramayona (Madrid)  Finitelypresented big mapping class groups  12  14.6  Seminar, Heidelberg 
20 
Sergei Tabachnikov (Penn State)  Skewers  RTG, Heidelberg 

22 17:15, HS  Bruno Martelli (Pisa)  link  Colloquium 

27 
Marcelo Alves (Neuchâtel)  Symplectic algebras, their algebraic growth, and applications to dynamics  2628.6  Seminar, Heidelberg 
July  
4 

RTG, Karlsruhe 

11 
Clément Guerin (Luxembourg)  Bad representations and singularities of character varieties  10  11.7  Seminar, Heidelberg 
12 2:15, SR3  Subhojoy Gupta (Indian Institute of Science)  Meromorphic quadratic differentials and geometric structures on surfaces  10  13.7  Seminar, Heidelberg 
18 
Ursula Hamenstädt (Bonn)  Incompressible surfaces in locally symmetric manifolds  18.7  RTG, Heidelberg 
25 
Andrea Seppi (Pavia)  Volume of Antide Sitter 3manifolds.  2328.7  Seminar, Heidelberg 
26 2: 15, RS 3 
SeokZun Song (Jeju National University)  Term ranks of matrices and their linear preservers.  Seminar, Heidelberg 

September  
21 11: 15, RS 4  Irene Pasquinelli (Duhram)  DeligneMostow lattices and cone metrics on the sphere  20.923.9  Seminar, Heidelberg 
Heidelberg Geometry Seminar & RTG Colloquium schedule, Winter 201617
Heidelberg Geometry Seminar, 13:00  14:00 (Seminarraum 4).
RTG colloquium, 1:30  2:30 (Lecture in 5.104 Konferenzraum, Coffee break in 5.303 Common Room).
5