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CATEGORIES:Geometric Group Theory (GGT) Seminar
SUMMARY:Quantifying local embeddings into finite groups -
Henry Bradford (University of Cambridge)
DTSTART;TZID=Europe/London:20191018T134500
DTEND;TZID=Europe/London:20191018T144500
UID:TALK132694AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/132694
DESCRIPTION:In this talk I will define an invariant which repr
esents a quantitative version of Vershik and Gordo
n's property of "local embeddability into finite g
roups". This mirrors quantitative versions of resi
dual finiteness\, which have been much studied in
the past decade. I will estimate this invariant in
several examples\, including wreath products and
other similar group extensions. I will also descri
be a family of groups which\, while residually fin
ite\, are easier to approximate using finite local
embeddings than finite quotients.\n
LOCATION:CMS\, MR13
CONTACT:
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