BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Drupal iCal API//EN
X-WR-CALNAME:Events items teaser
X-WR-TIMEZONE:America/Toronto
BEGIN:VTIMEZONE
TZID:America/Toronto
X-LIC-LOCATION:America/Toronto
BEGIN:DAYLIGHT
TZNAME:EDT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
DTSTART:20190310T070000
END:DAYLIGHT
BEGIN:STANDARD
TZNAME:EST
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
DTSTART:20181104T060000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:68398d1ca74dd
DTSTART;TZID=America/Toronto:20190625T153000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20190625T153000
URL:/combinatorics-and-optimization/events/algebraic-co
 mbinatorics-seminar-william-dugan
SUMMARY:Algebraic Combinatorics Seminar - William Dugan
CLASS:PUBLIC
DESCRIPTION:Summary \n\nTITLE: Sequences of Trees and Higher-Order Renorma
 lization Group\nEquations\n\nSpeaker:\n William Dugan\n\nAffiliation:\n Un
 iversity of À¶Ý®ÊÓƵ\n\nRoom:\n MC 6483\n\nABSTRACT:\n\nIn 1998\, Connes a
 nd Kreimer introduced a combinatorial Hopf\nalgebra HCK on the vector spa
 ce of forests of rooted trees that\nprecisely explains the phenomenon of r
 enormalization in quantum eld\ntheory.\n 
DTSTAMP:20250530T104900Z
END:VEVENT
END:VCALENDAR