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 214 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 | |
| 14.04.26 | Andrea Vaccaro (Lyon) | Various degrees of tracial divisibility. | ||
| 21.04.26 | Hanfeng Li (Chongqing) | Permanents and restricted permutations. | ||
| 28.04.26 | Julian Kranz | Groupoids, partial actions, and models for Kirchberg algebras. | ||
| 05.05.26 | Adriana Fernandez i Quero (Leuven) | Non-amenable C*-superrigid groups that are not W*-superrigid. | ||
| 12.05.26 | Chris Bruce (Newcastle) | Boundary actions of outer automorphism groups of Thompson-like groups. | ||
| 19.05.26 | Jens Kaad (Odense) | Spectral localizers in KK-theory. | ||
| 26.05.26 | --- | --- | Pentecost Week | |
| 02.06.26 | Dietmar Bisch (Vanderbilt) | Quadrilaterals of Subfactors and their Symmetries. | ||
| 09.06.26 | Gabor Szabo (Leuven) | The uniqueness theorem for Kasparov theory . |
The talk is beginning 16:00 s.t. | |
| 16.06.26 | Luzie Kupffer | Bi-infinite random walk paths and geodesic flow on hyperbolic groups. | ||
| 23.06.26 | David Jekel (Copenhagen) | Approximate freeness and C*-regularity in W*-bundles. | ||
| 30.06.26 | cancelled | |||
| 07.07.26 | Ikhan Choi (Tokyo) | A solution to Haagerup's problem on normal weights. | ||
| 14.07.26 | Apurva Seth (Oxford) | Continuous functions over pure C*-algebras and some applications to crossed products. | ||
| 29.07.26 | Christian Bönicke (Newcastle) | Amalgamated products of étale groupoids. | ||
| Date | Name | Title | Info | |
| 13.10.26 | Julian Kranz | tba. | ||
| 20.10.26 | Paolo Boldrini (Chalmers) | tba. | ||
| 27.10.26 | ||||
| 03.11.26 | Johannes Christensen (Aarhus) | tba. | ||
| 10.11.26 | Jakub Curda (Oxford) | tba. | ||
| 17.11.26 | Grigoris Kopsacheilis (Leuven) | tba. | tbc. | |
| 24.11.26 | Joachim Zacharias (Glasgow) | tba. | ||
| 01.12.26 | ||||
| 08.12.26 | Alcides Buss (Florianopolis) | tba. | ||
| 15.12.26 | ||||
| 22.12.26 | ||||
| 11.01.26 | Sven Raum (Potsdam) | Introduction to AI tools. | ||
| 12.01.26 | Sven Raum (Potsdam) | tba. | ||
| 15.01.26 | Sven Raum (Potsdam) | Introduction to AI tools. | ||
| 19.01.26 | ||||
| 26.01.26 | ||||
| 02.02.26 | ||||