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UID:682e5407879cf
DTSTART;TZID=America/Toronto:20200911T153000
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URL:/combinatorics-and-optimization/events/tutte-colloq
 uium-luke-postle-1
SUMMARY:Tutte Colloquium - Luke Postle
CLASS:PUBLIC
DESCRIPTION:Summary \n\nTITLE: Further progress towards Hadwiger's conject
 ure\n\nSpeaker:\n Luke Postle\n\nAffiliation:\n University of À¶Ý®ÊÓƵ\n\n
 Zoom:\n Please email Emma Watson.\n\nABSTRACT:\n\nIn 1943\, Hadwiger conj
 ectured that every graph with no $K_t$ minor is\n$(t-1)$-colorable for eve
 ry $t\\ge 1$. In the 1980s\, Kostochka and\nThomason independently proved
  that every graph with no $K_t$ minor has\naverage degree $O(t\\sqrt{\\log
  t})$ and hence is $O(t\\sqrt{\\log\nt})$-colorable. \n 
DTSTAMP:20250521T223031Z
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