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SUMMARY:Quasi-free flows on Cuntz algebras - Robert Neagu (KU Leuven)
DTSTART:20250718T111000Z
DTEND:20250718T113000Z
UID:TALK233128@talks.cam.ac.uk
DESCRIPTION:A natural\, but notoriously challenging problem is to determin
 e when two flows (i.e.\, continuous actions of the real numbers) on an a C
 *-algebra are the same up to some appropriate notion of equivalence (usual
 ly this is called cocycle conjugacy). So far\, if one looks at peak achiev
 ements in this direction such as Szab&oacute\;'s classification of Rokhlin
  flows or the Gabe-Szab&oacute\; classification (when restricted to flows)
 \, it is evident that general classification results could only be achieve
 d by restricting to the class of Rokhlin flows. A fundamental class of flo
 ws for which this problem is still open is the family of quasi-free flows 
 on Cuntz algebras. In this talk\, I will describe the history of the probl
 em\, and show how one can classify such flows 'generically'.
LOCATION:External
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