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UID:8819@i2m.univ-amu.fr
DTSTART;TZID=Europe/Paris:20260529T110000
DTEND;TZID=Europe/Paris:20260529T120000
DTSTAMP:20260520T120526Z
URL:https://www.i2m.univ-amu.fr/evenements/rauzy-2026-05-29/
SUMMARY:Matteo TAROCCHI (Université Paris-Saclay\, Laboratoire de mathéma
 tiques d'Orsay): Conjugaison dans les groupes de Röver-Nekrashevych
DESCRIPTION:Matteo TAROCCHI: Röver-Nekrashevych Groups V(G) are groups of 
 almost automorphisms of regular rooted trees\, and thus homeomorphisms of 
 Cantor spaces\, that are generated by a copy of Thompson's group V togethe
 r with some self-similar group G.\nIn this talk\, I will gently introduce 
 these groups and describe techniques to tackle their conjugacy problem (wh
 ich is the decision problem of\, given any two elements of a group\, deter
 mining whether they are conjugate in such group). This is based on a work-
 in-progress project with Julio Aroca\, Jim Belk and Francesco Matucci\, wh
 ere we show that the conjugacy problem for a Röver-Nekrashevych Group V(G
 ) is solvable as soon as G is a finitely generated\, torsion\, contracting
  self-similar group (e.g.\, when G is Grigorchuk group).
CATEGORIES:Séminaire,Rauzy
LOCATION:Saint-Charles - FRUMAM  (2ème étage)\, 3 Place Victor Hugo\, Mar
 seille\, 13003\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=3 Place Victor Hugo\, Marse
 ille\, 13003\, France;X-APPLE-RADIUS=100;X-TITLE=Saint-Charles - FRUMAM  (
 2ème étage):geo:0,0
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