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SUMMARY:Aaron Kettner (Czech Academy of Sciences)
DTSTART:20241204T200000Z
DTEND:20241204T210000Z
DTSTAMP:20260420T053103Z
UID:NYC-NCG/182
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/NYC-NCG/182/
 ">Cuntz–Pimsner algebras of twisted partial automorphisms</a>\nby Aaron 
 Kettner (Czech Academy of Sciences) as part of Noncommutative geometry in 
 NYC\n\n\nAbstract\nWe will discuss how to construct a $C^*$-algebra from a
  vector bundle\nand a partial action of the integers on the base space of 
 the bundle\,\nusing the machinery of Cuntz–Pimsner algebras. Despite bei
 ng much more\ngeneral\, the resulting algebras share many properties with 
 partial\ncrossed products by the integers. They also generalise the\n$C^*$
 -algebras constructed from homeomorphisms twisted by vector bundles\nrecen
 tly introduced by\nAdamo–Archey–Forough–Georgescu–Jeong–Strung
 –Viola. Under natural\nconditions on the action and the space\, classifi
 ability of the\n$C^*$-algebras is shown. In particular\, we obtain both st
 ably finite as\nwell as purely infinite classifiable $C^*$-algebras from t
 he same\ndynamical framework.\n
LOCATION:https://researchseminars.org/talk/NYC-NCG/182/
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