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.

Universität Duisburg-Essen
Fakultät für Mathematik
Universität Duisburg-Essen
Thea-Leymann-Strasse 9
45127 Essen

Office: WSC-O-3.61

Phone: +49 / (0)201 / 18-33924
Email: marina.meinel - at -