Editorial Board:


Algebras and Representation Theory


Annali di Matematica Pura ed Applicata


Transformation Groups



Further activities:

Speaker of the DFG priority program SPP 1388 (till 2015)

Contact person for the German Mathematical Society

I am a co-organizer of the regional seminar Transformation Groups & Mathematical Physics.

I am participating in the Collaborative Research Centres CRC/TRR 191


A short CV: 
studies at the universities in Hamburg, Basel and at the Brandeis University,  PhD at the Universität Basel,  postdoc positions at the Università degli studi di Roma "La Sapienza'' and at the Université de Grenoble, habilitation at the Universität Basel, visiting professorship at the Universität Bern, professorship at the Université de Strasbourg, membre junior of the Institut universitaire de France, professorship at the Universität Wuppertal, visiting professorship at UC Berkeley / MSRI, since 2005 professor at the Universität zu Köln.