University of Bonn
For a complete list see the "Vorlesungsverzeichnis" of Bonn University.
Max Planck Institute for Mathematics
as well as further activities and seminars on timely topics.
For a complete list have a look at MPIM's Web-Site [2]
IMPRS
The IMPRS will install two new seminars specifically for the graduate students:
For those students who first do their qualifying year, a crash course will be organized.
The IMPRS and BIGS will also organize a series of lectures by invited speakers on recent research in the fields of the graduate students.
Each graduate student is expected to participate in the weekly "Mathematical Colloquium", where invited speakers give talks about their latest work.
Apart from the scientific program, the IMPRS students can participate in the language courses and the social program the BIGS will offer.
Links:
[1] https://www.mpim-bonn.mpg.de/taxonomy/term/46
[2] http://www.mpim-bonn.mpg.de/