Universal C*-algebras and von Neumann algebras

Dozent: Prof. Dr. Moritz Weber


Thursday, 14-16

The language of the course is English, by default, unless all participants speak German.


There is an MS Teams with no. 133868. Please request the link from Moritz Weber.


In this lecture, which is a continuation of the lecture Functional Analysis 2b (Operator algebras), we will focus on examples of universal C*-algebras (such as the Toeplitz algebra, the Cuntz algebra and the irrational rotation algebra) before we give an introduction to von Neumann algebras (bicommutant theorem, factors, type classification etc).


We will treat Chapters 6 and 7 of the following script:
ISem24 Lecture Notes
See also the references below.

How to obtain the credit points

In order to obtain the credit points for this course, you must actively take part in the exercise sessions
and pass the oral exams at the end of the term which are the basis for your grade.


Books on operator algebras/C*-algebras:

  • Bruce Blackadar, Operator algebras. Theory of C*-algebras and von Neumann algebras, 2006.
  • Kenneth Davidson, C*-algebras by example, 1996.
  • Jacques Dixmier, Les C*-algebres et leurs representations, 1969.
  • Richard V. Kadison and John R. Ringrose, Fundamentals of the Theory of Operator Algebras.
    Volume I-IV, 1997.
  • Gerard Murphy, C*-algebras and operator theory, 1990.
  • Masamichi Takesaki, Theory of Operator Algebras I-III, 2002/2003

Books and lecture notes on von Neumann algebras:

Postal address

Saarland University
Department of Mathematics
Postfach 15 11 50
66041 Saarbrücken

Physical address

Saarland University
Campus building E 2 4
66123 Saarbrücken