A signed e-expansion of the chromatic quasisymmetric function
Speaker:
Foster TomSpeaker Affiliation:
MITMarch 26, 2024
HTTPS://UBC.ZOOM.US/J/67626378782?PWD=SHAZL1KWTMCYYM1PDKDZNVNLNUZ6DZ09
Abstract:
We prove a new signed elementary symmetric function expansion of the chromatic quasisymmetric function of any natural unit interval graph. We then use sign-reversing involutions to prove new combinatorial formulas for melting lollipops and for K-chains, which are formed by joining cliques at single vertices.
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Event Details
March 26, 2024
4:00pm to 5:00pm
HTTPS://UBC.ZOOM.US/J/67626378782?PWD=SHAZL1KWTMCYYM1PDKDZNVNLNUZ6DZ09
, , CA