Because of the attack on the computer network of the University of Duisburg-Essen, some content (in particular some image files) cannot be accessed because it is stored on central servers of the university.

Address:
Universität Duisburg-Essen,
Fakultät für Mathematik
Thea-Leymann-Straße 9
45127 Essen

Office: WSC-O-3.65

Email: pietro.gigli - at - uni-due.de