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:20210314T070000
END:DAYLIGHT
BEGIN:STANDARD
TZNAME:EST
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
DTSTART:20201101T060000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:69d2e90645e4f
DTSTART;TZID=America/Toronto:20210610T160000
SEQUENCE:0
TRANSP:TRANSPARENT
DTEND;TZID=America/Toronto:20210610T160000
URL:https://uwaterloo.ca/combinatorics-and-optimization/events/joint-colloq
 uium-shayla-redlin
SUMMARY:Joint Colloquium - Shayla Redlin
CLASS:PUBLIC
DESCRIPTION:TITLE: Counting Antichains in the Boolean Lattice\n\nSpeaker:\
 n Shayla Redlin\n\nAffiliation:\n University of Waterloo\n\nZoom:\n Contac
 t Maxwell Levit\n\nABSTRACT:\n\nHow many antichains are there in the Boole
 an lattice P(n)? Sperner's\ntheorem (1928) tells us that the largest antic
 hain in P(n) has size A\n= (n choose n/2). A subset of an antichain is an 
 antichain\, so there\nare at least 2^A antichains in P(n). Interestingly\,
  it turns out that\nthis is close to the total\, as Kleitman (1969) showed
  that the number\nof antichains is 2^(A(1+x)) where x goes to zero as n go
 es to\ninfinity.
DTSTAMP:20260405T225814Z
END:VEVENT
END:VCALENDAR