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DTSTART;TZID=America/Toronto:20230531T113000
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URL:https://uwaterloo.ca/pure-mathematics/events/logic-seminar-44
SUMMARY:Logic Seminar
CLASS:PUBLIC
DESCRIPTION:DAVID CHODOUNSKY\, INSTITUTE OF MATHEMATICS OF THE CZECH ACADEM
 Y OF\nSCIENCES\n\n\"COUNTABLE CHROMATIC NUMBER OF DEFINABLE GRAPHS VIA GAM
 ES\"\n\nWe define games which characterize countable coloring numbers of\n
 analytic graphs on Polish spaces. These games can provide simple\nverifica
 tion of the countable chromatic number of certain graphs. (Eg.\nthe ration
 al distance graph on the Euclidean plane.) Joint work with\nJindrich Zaple
 tal.\n\nMC 5403
DTSTAMP:20260505T221706Z
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