SMS-DMV workshop on groups and dynamics

Spectra and L2-invariants

10 - 13 September 2018

Geneva, Switzerland


Laurent Bartholdi (ENS Paris & University of Göttingen)

Jean Bellissard (University of Münster)

Marc Burger (ETHZ)

Corina Ciobotaru (University of Fribourg)

David Damanik (Rice University)

Jean-Pierre Eckmann (University of Geneva)

Alejandra Garrido (University of Düsseldorf)

Thierry Giordano (University of Ottawa)

Rostislav Grigorchuk (Texas A&M University)

Harald Helfgott (University of Göttingen)

Alessandra Iozzi (ETHZ)

Anders Karlsson (University of Geneva)

Johannes Kellendonk (University of Lyon)

Wolfgang Lück (University of Bonn)

Nicolas Matte Bon (ETHZ)

Felix Pogorzelski (University of Leipzig)

Roman Sauer (Karlsruhe Institute of Technology)

Alain Valette (University of Neuchâtel)

General information

This joint workshop of the Swiss and German mathematical societies will focus on recent developments in geometric group theory that are all, in one way or another, related to spectral theory. The topics featured at the workshop will include L2-invariants of groups and group actions, invariant random subgroups and uniform recurrent subgroups, Schreier graphs, tilings and the theory of aperiodic order.

The workshop will be held at the University of Geneva. The venue is the Uni Mail site, room M S160. See the map here.

Schedule: The timetable for the workshop is available here.

Talks: You can find a booklet with information about the talks here.

Conference dinner: We are organizing a conference dinner on Wednesday evening, at 19:30 at Café des Négociants in Carouge.

Participants: Find a list of participants here.

If you have any further questions, you can find us at


Some of the speakers used slides for their talks. You can find them here:


Registration is now closed.

Personal information

Reminder: The lectures start on Monday (10/09/18) morning and end on Thursday (13/09/18) afternoon.


Would you like to present a talk or a poster? If yes, please include the title and a short abstract. Please note that we have slots only for a few talks beside the invited ones, so we may not be able to accommodate all the contributed talks.

Accommodation and financial support

We can offer up to 600 CHF towards your living expenses but we ask you to make your own reservation. The organizers will make hotel reservations for the invited speakers only.

Young participants please provide the topic of your research and a person of reference in the comments below. We may also be able to offer some travel support in exceptional cases. If you want to apply, please check the box and provide some motivation in the comments below.

Additional information

Please include here any additional information you want to let us know.

Thank you! We received your application. A confirmation email should arrive to your inbox shortly.
Oops! There was a problem in your application:


Daniel Lenz (University of Jena)

Christophe Pittet (University of Aix-Marseille & University of Geneva)

Tatiana Nagnibeda (University of Geneva)

Local organization: Aitor Pérez (University of Geneva)

Supported by