Buildings, October 2013, Munster University, Germany
Oberwolfach, June 2013, Jeroen Schillewaert with Leibniz Fellows; Nguyen Tuc and Emilio Lauret
3rd Abel conference for Endre Szemeredi, December 2012, Michigan, USA
Oberwolfach, August 2012, Jeroen Schillewaert with Hendrik van Maldeghem
Hiking in France with colleagues from ULB, Belgium, September 2011
San Diego, October 2012 with Emma.