Snøhetta. Source: Wikipedia
This meeting of the Scandinavian noncommutative geometers and operator algebraists is going take place at the University of Oslo during 27th to 28th of November 2026.
The workshop is located at the University of Oslo, campus Blindern, in the building Niels Henrik Abels Hus. All talks will take place in room 108 on the ground floor, which is the second lecture room to the left after entering through the main entrance. See map and more practical information about transport at the bottom of this page.
The dinner will take place at 18:45 on Friday, November 27, in the restaurant Mei Wei, Tullins gate 6, 0166 Oslo.
The price for hotel rooms usually increase towards the date of the stay, so it is a good idea to book as early as possible. Here is a list of some hotels centrally located in Oslo, listed in increasing order of price magnitude, where the price per night for a single room lies in the scale 1050-1350 NOK (incl. breakfast) if you book in the near future:
Thon Hotel Gyldenløve, Scandic Vulkan, Thon Hotel Astoria, Scandic St Olavs Plass, Thon Hotel Slottsparken, Thon Hotel Europa, Scandic Holberg, Scandic Go Grensen 20.
Some offers/discounted prices are sometimes available via the standard hotel aggregators web-sites, or if you choose to become a member of Thon Hotels/Scandic Hotels.
An important question in several branches of harmonic analysis is how a basis or frame for a given Hilbert space responds to small perturbations. In this talk, we will see that continuous fields of groupoid C*-algebras provide a conceptual framework for studying such questions. The talk is based on joint work with Siegfried Beckus and Jordy Timo van Velthoven.
Starting from a spectral triple on the unit fibre of a saturated Fell bundle over a discrete group, we construct a spectral triple on its reduced cross-sectional C*-algebra. The construction combines fibrewise lifts of the original Dirac operator with a vertical operator induced by a proper length function on the group.
The most convenient way to get from Oslo Airport Gardermoen to Oslo Central Station is by train. You can either take a local train operated by Vy or the Flytoget express train. The latter is not really much faster, but runs more often. Tickets for both of these trains can be bought from the machines of the respective companies at the airport.
To reach campus Blindern from the city centre, you can take the metro from one of the stations Jernbanetorget, Stortinget, or Nationaltheatret. Both lines 4 and 5 westbound go to Blindern. Alternatively, you can take a tram, line 17 or 18, from one of the stops Jernbanetorget, Stortorvet, Tinghuset, Tullinløkka or Holbergs plass in the direction of Gaustadalléen, and exit at the stop Universitetet Blindern.
Tickets can not bought on the metro or on the tram, and there are no machines at the stations/stops to buy them either. It is probably most convenient to buy electronic tickets via the smartphone app Ruter. Alternatively they can be bought physically at the kiosks Narvesen and 7-Eleven.
Lyudmila Turowska
Søren Eilers
Magnus Goffeng [magnus dot goffeng (at) math dot lth dot se (responsible for the homepage)]
Erik Bédos
Kevin Aguyar Brix