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UID:69b4a5fd97b69
DTSTART;TZID=America/Toronto:20230124T143000
SEQUENCE:0
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URL:https://uwaterloo.ca/pure-mathematics-logic/events/kaleidoscopic-groups
 -and-generic-point-property
SUMMARY:Kaleidoscopic groups and the generic point property
CLASS:PUBLIC
DESCRIPTION:GIANLUCA BASSO\, UNIVERSITÉ LYON 1\n\nDuchesne\, Monod and Wes
 olek described how to associate to each\npermutation group of countable de
 gree a group acting on a certain\none-dimensional tree-like continuum. Th
 is is called its kaleidoscopic\ngroup. We reframe the construction in term
 s of countable structures\nand determine which dynamical properties are p
 reserved when passing to\nthe kaleidoscopic group. This requires a novel 
 structural Ramsey\ntheorem and produces a new class of examples exhibiting
  a poorly\nunderstood phenomenon\, namely non-metrizable universal minima
 l flows\nwith a comeager orbit. \n\nThis is joint work with Todor Tsankov
 .\n\nMC 5479
DTSTAMP:20260314T000413Z
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