Mini-Workshop Reflection Groups in Magdeburg

As a small warm-up in the week before the "Young Geometric Group Theory XI" in Münster, we are hosting a workshop on Reflection Groups 

February 8th and 9th 2023 in Magdeburg.

Invited speakers include


The programme will start on Wednesday Feb. 8th around 10 am and we plan to be finished by 6:30 pm on Thursday Feb 9th. Below is a tentative schedule:

   Wed, 08.02.    Thu, 09.02.
9:00 Arrival and registration                                                                       


Stream: Talk from Paris
Sami Douba


Michelle Chu


Stream: Talk from Paris
Balthazar Fléchelles


Annette Karrer


Lunch break


Lunch together


Reflection groups: introductory dialog
Marco Lotz


Mireille Soergel
15:00 Coffee Break  15:00 Coffee Break 


Get to know & Problem Session


Yuri Santos Rego


Short Coffee Break


Coffee Break and Wrap Up 


Virtual meeting with Paris


Virtual meeting with Paris

Titles and Abstracts are to be found here.


Teaming up with Paris

In the spirit of cooperation and learning other topics, we start on Wednesday with the streaming of talks from a parallel meeting held by our colleagues in Paris, hosted at the Institut des Hautes Études Scientifiques and organised by Indira Chatterji, Sami Douba, and Rachel Skipper. The talks in Paris will be held in (and streamed from) the Amphithéâtre Léon Motchane. For any inquiries regarding the French meeting, please contact the local organisers.


Besides the talks from Paris on Wednesday morning, we will discuss some exercises after overview talks in the afternoon.
On Thursday, the invited speakers will give talks in person, also broadcast to Paris. We will end the event with a talk by one member of our working group.


A list of all participants is to be found here



All events except the coffee breaks and the lunch together will take place in building 3 room 106 (G03-106) at Universitätsplatz 2. Please notice that the building is wheelchair accessible.

At the university and in the surroundings there are a number of options for lunch, dinner or snacks. You can find some of them in the map below.



Registration is now closed. If you would like participate remotely, please contact the organisers.

Oranisation and Contact

Organisers: Anna Michael and Marco Lotz.

Scientific Committee: Indira Chatterji, Yuri Santos Rego, and Petra Schwer.

For further questions please contact the organisers.


We gratefully acknowledge financial support from the Faculty of Mathematics of the OvGU Magdeburg and the German Research Foundation (DFG) via the Research Training Group 2297 MathCoRe.

logo_math_fak       dfg_logo_blau        MathCoRe_LG_quer_gs

Link to the YGGT XI in Münster

Last Modification: 15.09.2023 - Contact Person: Marco Lotz