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Operator algebras and groupoid C*-algebras

Class at Faculty of Mathematics and Physics |
NMMA652

Syllabus

1. Basic definitions and Examples

2. Gelfand-Naimark and continuous functional calculus

3. Positive elements, positivity and partial order

4. Hereditary C*-subalgebras

5. Functionals and representations

6. GNS construction

7. Representations

8. Completely positive maps

9. Tensor products

10. Inductive limits and AF algebras

11. Group C*-algebras

12. Crossed products

13. Groupoids

14. Groupoid C*-algebras

15. Twisted groupoid C*-algebras and Cartan subalgebras Some suggested self-study topics:

1. Cantor minimal systems

2. graph C*-algebras

3. classification AF algebras

4. Compact quantum groups

5. Cuntz algebras

Annotation

An introduction to the main concepts in C*-algebra theory, with the aim at preparing students to understand elements of contemporary research in the field. In particular, later parts of the course will focus on constructions from topological groupoids, a highly active area of research.