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SUMMARY:Quantifying local embeddings into finite groups - Henry Bradford (
 University of Cambridge)
DTSTART:20191018T124500Z
DTEND:20191018T134500Z
UID:TALK132694@talks.cam.ac.uk
CONTACT:76015
DESCRIPTION:In this talk I will define an invariant which represents a qua
 ntitative version of Vershik and Gordon's property of "local embeddability
  into finite groups". This mirrors quantitative versions of residual finit
 eness\, which have been much studied in the past decade. I will estimate t
 his invariant in several examples\, including wreath products and other si
 milar group extensions. I will also describe a family of groups which\, wh
 ile residually finite\, are easier to approximate using finite local embed
 dings than finite quotients.\n
LOCATION:CMS\, MR13
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