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:20201101T060000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:6832caf317ce7 DTSTART;TZID=America/Toronto:20210208T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Toronto:20210208T113000 URL:/combinatorics-and-optimization/events/algebraic-gr aph-theory-seminar-mark-kempton-0 SUMMARY:Algebraic Graph Theory Seminar - Mark Kempton CLASS:PUBLIC DESCRIPTION:Summary \n\nTITLE: Cospectral Vertices and Isospectral Reducti ons\n\nSpeaker:\n Mark Kempton\n\nAffiliation:\n Brigham Young University\ n\nZoom:\n Contact Soffia Arnadottir\n\nABSTRACT:\n\nUnderstanding cospect ral vertices in graphs is fundamental to\nunderstanding what the spectrum of the adjacency matrix can tell us\nabout a graph.  Furthermore\, cospec tral vertices are necessary in\nconstructions of graphs exhibiting perfect quantum state transfer.  I\nwill talk about how to recognize cospectral vertices via a tool from\nnetwork dynamics: the isospectral reduction of a graph.  I will\nexplore possible ways of getting new constructions of co spectral\nvertices by looking at isospectral reductions.\n DTSTAMP:20250525T074659Z END:VEVENT END:VCALENDAR