| Gruppenleiter
 | Aktivitäten
 08. - 12. Juli 2019: Arbeitstagung 2019 on Geometry
 
 31. Januar - 01. Februar 2019: Geometric Group Theory in Bonn
 
 15. - 18. Januar 2016: Dynamics of Geometric Group Actions
 In honour of François Ledrappier on the occasion of his 70th birthday
 
 Geometric Group Theory
in Bonn 2015
 
 
 
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