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:69d32687c02b4
DTSTART;TZID=America/Toronto:20190625T153000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20190625T153000
URL:https://uwaterloo.ca/combinatorics-and-optimization/events/algebraic-co
 mbinatorics-seminar-william-dugan
LOCATION:MC - Mathematics &amp; Computer Building 200 University Avenue West 64
 83 Waterloo ON N2L 3G1 Canada
SUMMARY:Algebraic Combinatorics Seminar - William Dugan
CLASS:PUBLIC
DESCRIPTION:TITLE: Sequences of Trees and Higher-Order Renormalization Gro
 up\nEquations\n\nSpeaker:\n William Dugan\n\nAffiliation:\n University of 
 Waterloo\n\nRoom:\n MC 6483\n\nABSTRACT:\n\nIn 1998\, Connes and Kreimer i
 ntroduced a combinatorial Hopf\nalgebra HCK on the vector space of forest
 s of rooted trees that\nprecisely explains the phenomenon of renormalizati
 on in quantum eld\ntheory.
DTSTAMP:20260406T032039Z
END:VEVENT
END:VCALENDAR