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SUMMARY:Nigel Higson (ennsylvania State University)
DTSTART:20200702T150000Z
DTEND:20200702T160000Z
DTSTAMP:20260423T022035Z
UID:UKVOAS/7
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UKVOAS/7/">J
 ohn Roe and Coarse Geometry</a>\nby Nigel Higson (ennsylvania State Univer
 sity) as part of UK Virtual operator algebras seminar\n\n\nAbstract\nJohn 
 Roe was a much admired figure in topology and noncommutative geometry\, an
 d the creator of the C*-algebraic approach to coarse geometry.  John died 
 in 2018 at the age of 58. My aim in the first part of the lecture will be 
 to explain in very general terms the major themes in John’s work\, and i
 llustrate them by presenting one of his best-known results\, the partition
 ed manifold index theorem.  After the break I shall describe a later resul
 t\, about relative eta invariants\, that has inspired an area of research 
 that is still very active.\n\nAssumed Knowledge: First part: basic familia
 rity with C*-algebras\, plus a little topology. Second part: basic familia
 rity with K-theory for C*-algebras.\n
LOCATION:https://researchseminars.org/talk/UKVOAS/7/
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