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:20200308T070000 END:DAYLIGHT BEGIN:STANDARD TZNAME:EST TZOFFSETFROM:-0400 TZOFFSETTO:-0500 DTSTART:20191103T060000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:6833ee84d565d DTSTART;TZID=America/Toronto:20200810T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Toronto:20200810T113000 URL:/combinatorics-and-optimization/events/algebraic-gr aph-theory-seminar-david-roberson SUMMARY:Algebraic Graph Theory Seminar - David Roberson CLASS:PUBLIC DESCRIPTION:Summary \n\nTITLE: What do graph planarity and homomorphism co unts have to do\nwith quantum mechanics?\n\nSpeaker:\n David Roberson\n\nA ffiliation:\n Technical University of Denmark\n\nZoom:\n Contact Soffia Ar nadottir\n\nABSTRACT:\n\nI will introduce the notion of quantum isomorphis ms of graphs. These\nare defined in terms of a game in which two cooperati ng players\nattempt to convince a referee that two given graphs are isomor phic.\n DTSTAMP:20250526T043100Z END:VEVENT END:VCALENDAR