Work group Operator algebras and non-commutative geometry

Our work group represents the fields of operator algebras and noncommutative geometry in teaching and research. The current focus of our research is

  • structure of C * algebras and more general non-commutative algebras, in particular their K-theory and cyclic homology, as well as cohomology, group C * algebras
  • representation theory of locally compact groups and the Baum-Connes conjecture
  • non-commutative dynamic systems such as crossed products and ring C * algebras
  • quantized spaces
  • quantum groups and quantum groupoids

We meet every Monday 14 - 16 in SRZ 216 for kleines seminar that is addressed mainly to MSc and PhD students, and to PostDocs.


During the lecture period, we meet for talks at Oberseminar C* algebras every Tuesday at 15:45 with coffee, cake and time for discussions in the seminar room SRZ 216 (Orléans-Ring 12).



Oberseminar C*-Algebras


Date Name Title Info
04.04.23 Jonathan Taylor (Göttingen) Morphisms between étale groupoids coming from C*-algebras.  
11.04.23 Anna Duwenig (Leuven) Cartan subalgebras for non-principal twisted groupoid C*-algebras.  

Tim de Laat

Actions of higher rank groups on uniformly convex Banach spaces.  
25.04.23  Siegfried Beckus (Potsdam) Continuous fields of C*-algebras, spectral approximations and applications. change of room: SR 1C
02.05.23  Maria Gerasimova A new family of exotic group C*-algebras.  
09.05.23  --- ---  
16.05.23  Dan Ursu Simplicity of crossed products by FC-hypercentral groups.  
23.05.23  Priyanga Ganesan (San Diego) Quantum graphs and colorings.   
30.05.23  ---  ---  Pfingstwoche / Pentecost week
06.06.23  March Boedihardjo (ETH Zürich) Spectral norm and strong freenes.  
13.06.23  Ilijas Farah (Toronto) tba.  change of room: SR 1C
20.06.23  Srivatsav Kunnawalkam Elayavalli (UCLA) tba.   
27.06.23  Chiranjib Mukherjee tba.  
04.07.23  Pieter Spaas (Kopenhagen) tba.