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:20230312T070000 END:DAYLIGHT BEGIN:STANDARD TZNAME:EST TZOFFSETFROM:-0400 TZOFFSETTO:-0500 DTSTART:20231105T060000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:682e3db8b3d6a DTSTART;TZID=America/Toronto:20231116T140000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Toronto:20231116T140000 URL:/combinatorics-and-optimization/events/algebraic-an d-enumerative-combinatorics-seminar-alejandro SUMMARY:Algebraic and Enumerative Combinatorics Seminar - Alejandro Morales \nBorrero CLASS:PUBLIC DESCRIPTION:Summary \n\nTITLE: Linear relations and Lorentzian property of chromatic symmetric\nfunctions\n\nSPEAKER:\n Alejandro Morales Borrero\n\n AFFILIATION:\n Université du Québec à Montréal\n\nLOCATION:\n MC 6029\ n\nThere will be a pre-seminar presenting relevant background at the\nbegi nning graduate level starting at 1:00 pm.\n\nABSTRACT: The chromatic symme tric function (CSF) of Dyck paths of\nStanley and its Shareshian Wachs q-a nalogue (q-CSF) have important\nconnections to Hessenberg varieties\, diag onal harmonics and LLT\npolynomials. In the\, so called\, abelian case the y are related to\nplacements of non-attacking rooks by results of Stanley- Stembridge\n(1993) and Guay-Paquet (2013).\n DTSTAMP:20250521T205520Z END:VEVENT END:VCALENDAR