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DTSTART;TZID=America/Toronto:20171006T143000
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URL:https://uwaterloo.ca/pure-mathematics/events/geometry-and-topology-semi
 nar-10
SUMMARY:Geometry and Topology Seminar
CLASS:PUBLIC
DESCRIPTION:AJNEET DHILLON\, UNIVERSITY OF WESTERN ONTARIO\n\n\"Tamagawa nu
 mbers and connected components of stacks\"\n\nLet X be a smooth projective
  curve over a finite field and $G$ a\nsemisimple algebraic group over its 
 function field. Let $\\mathcal{G}$\nbe a smooth group scheme over X with g
 eneric fiber $G$. The Tamagawa\nnumber of $G$ is an arithmetic invariant o
 btained from a Haar measure\non the adelic points of $G$. A conjecture of 
 Harder relates this\nnumber to the number of components of the moduli stac
 k of\n$\\mathcal{G}$-bundles.
DTSTAMP:20260607T203850Z
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