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SUMMARY:Jacopo Bassi (University of Rome Tor Vergata)
DTSTART:20260923T190000Z
DTEND:20260923T200000Z
DTSTAMP:20261001T102433Z
UID:NYC-NCG/225
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/NYC-NCG/225/
 ">Boundary amenability of certain discrete group actions</a>\nby Jacopo Ba
 ssi (University of Rome Tor Vergata) as part of Noncommutative geometry in
  NYC\n\n\nAbstract\nI will present examples of non-amenable actions of dis
 crete\ngroups on countable sets which extend to amenable actions on the\na
 ssociated Stone-Cech remainder. In some of these examples the\n$C^*$-algeb
 ras associated to the corresponding unitary group\nrepresentation has a un
 ique ideal. The techniques involved rely on a\nstudy of the dynamics on ce
 rtain extensions of these boundaries.\n\nBased on arXiv:2507.19614v3\n
LOCATION:https://researchseminars.org/talk/NYC-NCG/225/
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