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SUMMARY:Stefan Witzel (Giessan)
DTSTART:20210225T180000Z
DTEND:20210225T190000Z
DTSTAMP:20260423T004036Z
UID:OSUGGT/29
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/OSUGGT/29/">
 Uncountably many simple groups up to quasi-isometry</a>\nby Stefan Witzel 
 (Giessan) as part of Ohio State Topology and Geometric Group Theory Semina
 r\n\n\nAbstract\nThe purpose of geometric group theory is to investigate g
 roups up to quasi-isometry\, a coarse geometric notion. Many classes of gr
 oups contain uncountably many finitely generated groups up to isomorphism.
   From a geometric perspective one is led to ask (for each class) whether 
 this remains true up to quasi-isometry. I will talk about joint work with 
 Ashot Minasyan and Denis Osin where we use the Baire category theorem to a
 nswer such questions. Specifically I will show that there are uncountably 
 many finitely generated simple groups up to quasi-isometry.\n
LOCATION:https://researchseminars.org/talk/OSUGGT/29/
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