Some manuscripts of talks, expositions etc.
Equivariant twisted K-theory, after Atiyah and Segal
, Oberwolfach AG "Twisted K-theory", October 2006.
On the topology of the moduli space of stable curves
, Courant Colloquium, Göttingen, October 2007. Published in: "Courant Colloquium, Trend in Mathematics" (R. Meyer, T. Schick, Y. Tschinkel, eds.), p. 57-68. Georg-August Universität Göttingen, 2008
Why there cannot be a 3-dimensional Madsen-Weiss-Theorem
, Oberwolfach Topology conference, September 2008.
Brown's proof of the Adams conjecture
, Arbeitsgemeinschaft Homotopietheorie Bonn-Wuppertal-Düsseldorf-Bochum, January 2009.
Lie's third theorem, after Cartan-Van Est
The Bass-Heller-Swan theorem