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SUMMARY:Anitha Thillaisundaram (University of Lincoln)
DTSTART:20201022T150000Z
DTEND:20201022T160000Z
DTSTAMP:20260423T021349Z
UID:GOThIC/3
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/GOThIC/3/">T
 he congruence subgroup property for multi-EGS groups</a>\nby Anitha Thilla
 isundaram (University of Lincoln) as part of GOThIC - Ischia Online Group 
 Theory Conference\n\n\nAbstract\nIt was proved by G. A. Fernández-Alcober
 \, A. Garrido and J. Uria-Albizuri that the branch Grigorchuk-Gupta-Sidki 
 (GGS) groups possess the congruence subgroup property. This result was ext
 ended to all branch multi-GGS groups by A. Garrido and J. Uria-Albizuri. T
 he extended Gupta-Sidki (EGS) groups\, which were the first examples of fi
 nitely generated branch groups without the congruence subgroup property\, 
 were constructed by Pervova. In this talk\, we consider a natural generali
 sation of multi-GGS and EGS groups\, and demonstrate their unexpected beha
 viour concerning the congruence subgroup property. This is joint work with
  J. Uria-Albizuri.\n
LOCATION:https://researchseminars.org/talk/GOThIC/3/
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