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DTSTART:20240310T070000
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DTSTART;TZID=America/Toronto:20241114T160000
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URL:https://uwaterloo.ca/pure-mathematics/events/analysis-seminar-188
SUMMARY:Analysis Seminar
CLASS:PUBLIC
DESCRIPTION:ASTRID AN HUEF\, VICTORIA UNIVERSITY OF WELLINGTON \n\nNuclear 
 dimension of C*-algebras of groupoids.\n\nLet G be a locally compact\, Hau
 sdorff groupoid.  Guentner\, Willet and\nYu defined a notion of dynamic a
 symptotic dimension (dad) for etale\ngroupoids\, and used it to find  a b
 ound on the nuclear dimension of\nC*-algebras of principal groupoids with 
 finite dad.  To have finite\ndad\, a groupoid must have locally finite is
 otropy subgroups which\nrules out\, for example\, the graph groupoids and 
 twists of etale\ngroupoids by trivial circle bundles. I will discuss how t
 he techniques\nof Guentner\, Willett and Yu can be adjusted to include som
 e groupoids\nwith large isotropy subgroups\, including an applications to\
 nC*-algebras of directed graphs that are AF-embeddable. This is joint\nwor
 k with Dana Williams. \n\nMC 5417 \n\nOr join on Zoom with the link below
DTSTAMP:20260505T184250Z
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