Bounded Cohomology, Harmonic Maps and Higgs Bundles
in Strasbourg 14--16 March 2005 and Basel 17--19 March
2005, organized in collaboration with Oliver Baues
(Universität Karlsruhe), Olivier Biquard (Université de
Strasbourg), Stefan Wenger (Universität Basel) and Anna
Wienhard (Universität Basel).
Geometric and Analytic Group Theory in Ventotene
(LT), Italy, 9--14 September 2013, organized in
collaboration with Gabriella Kuhn (University of Milano
Bicocca) and Michah Sageev (Technion, Haifa).
and Groups in Ventotene (LT), Italy, 7--12 September
2015, organized in collaboration with Stefano Francaviglia
(Università di Bologna), Roberto Frigerio (Università di
Pisa), Kate Juschenko (Northwestern University), Gabriele
Mondello (Università di Roma La Sapienza) and Michah
Sageev (Technion, Haifa)
at the Isaac Newton Institute, Cambridge, UK, January
3rd--June 23rd, 2017, organized in collaboration with
Goulnara Arzhantseva (Universität Wien), Cornelia Drutu
(Oxford University) and Nicolas Monod (EPFL).
at the Isaac Newton Institute, 19-23 June 2017, organized
in collaboration with Mladen Bestvina (University of
Utah), Brian Bowditch (University of Warwick) and Nicolas
Monod (EPFL), in the context of the special semester
"Non-Positive Curvature, Group Actions and Cohomology".