Miniworkshop on C*-algebras and number theory

Organizers: Alan Carey, Joachim Cuntz

December 19 - 21, 2011

 




Current list of confirmed participants:

Alan Carey, Gunther Cornelissen, Joachim Cuntz, Christopher Deninger, Siegfried Echterhoff, Marcelo Laca, Nadia Larsen, Xin Li, Matilde Marcolli, Sergey Neshveyev, Ryszard Nest, John Phillips, Sven Raum, Simen Rustad, Nicolai Stammeier, Thomas Timmermann, Christian Voigt, Wend Werner, Wilhelm Winter, Raimar Wulkenhaar, Bora Yalkinoglu


Schedule:
Monday
Tuesday
Wednesday
10:00 - 11:00
John Phillips

A family of C*-algebras containing O_n and Q_N
10:00 - 11:00
Joachim Cuntz

The KMS-structure of the regular C*-algebra
of the ax+b-semigroup for a ring of algebraic integers

10:00 - 11:00
Christopher Deninger

Generalized Nevanlinna theory and invariant measures on the circle
11:00 - 11:15
coffee break
11:00 - 11:15
coffee break
11:00 - 11:15
coffee break
11:15 - 12:15
Nadia Larsen

KMS states of Nica-Toeplitz algebras of product systems
11:15 - 12:15
Marcelo Laca

The spectrum of the maximal commutative subalgebra in the regular C*-algebra of the ax+b-group
11:15 - 12:15
Gunther Cornelissen

Reconstructing number fields using noncommutative geometry, part 1
12:15 - 14:00
Lunch
12:15 - 14:00
Lunch
12:15 - 14:00
Lunch
14:00 - 15:00
Sergey Neshveyev

Bost-Connes systems associated with function fields
14:00 - 15:00
Siegfried Echterhoff

The primitive ideal space of a C*-algebra attached to the ax+b-semigroup of the ring of integers R in a number field
14:00 - 15:00
Matilde Marcolli

Reconstructing number fields using noncommutative geometry, part 2
15:00 - 15:30
coffee break
15:00 - 15:30
coffee break
15:00 - 15:30
coffee break

15:30 - 16:30
Xin Li

K-theory for semigroup C*-algebras
15:30 - 16:30
Bora Yalkinoglu

On arithmetic aspects of Bost-Connes systems

19:00
Conference dinner





How to find us:

By car

From highway Autobahn A1/E3 exit Münster/Nord, direction Münster. About 600m inside Münster city limits turn right at the bigger crossing with traffic lights ("Steinfurter Str./Orleansring"). Then follow the Orleansring southwards, turn left at the second crossing to the Einsteinstraße. (In the higher building, there is the Fachbereich Mathematik and Informatik.) Then turn right into the first street (Hittorfstraße).

Alternatively from highway Autobahn A43 use exit Münster-Süd, follow the signs Universitätsklinikum resp. Zentralklinikum up to the crossing Orleansring/Einsteinstraße.

By train

Münster is connected to the main railway lines (InterCity, Interregio). For the exact dates you may consult the DB train timetable or refer to the www-page of the Deutsche Bahn AG.
From Münster central station (Hauptbahnhof) take a cab or a bus (lines 3,4,11,21...) up to stop Hüfferstraße or Coesfelder Kreuz.
Münster is a city of cyclists, you may rent a bike and ride to us, too. Most of the way you can follow the promenade (for pedestrians and cyclists only), formerly a part of Münster's historical city wall.

By plane

The international airport
Flughafen Münster/Osnabrück (FMO) is located about 20 km northwards from Münster, direct flights are offered from and to Berlin, Frankfurt, München, Zurich, Paris, Stuttgart and others.
Arriving there, you may reach Münster central railway station (Münster Hbf) using the Schnellbus S 50. The way from the station is described above. You can also take a cab to Münster for about 40 EUR.
From Düsseldorf airport it takes one and a half hour by train (easy to find, about 20 EUR one way) to Münster Hbf, (change at Düsseldorf Hbf) and then 10 minutes by taxi or by bus as mentioned above.






  Elke Ernsting (elke.ernsting@uni-muenster.de)

  Last updated: 02/12/2011