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SUMMARY:Logan Crew (University of Waterloo)
DTSTART:20200921T190000Z
DTEND:20200921T200000Z
DTSTAMP:20260423T040008Z
UID:YUAAS/11
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/YUAAS/11/">E
 dge Deletion-Contraction in the Chromatic and Tutte Symmetric Functions</a
 >\nby Logan Crew (University of Waterloo) as part of York University Appli
 ed Algebra Seminar\n\n\nAbstract\nWe consider symmetric function analogues
  of the chromatic and Tutte polynomials on graphs whose vertices have posi
 tive integer weights. We show that in this setting these functions admit e
 dge deletion-contraction relations akin to those of the corresponding poly
 nomials\, and we use these relations to give enumerative and/or inductive 
 proofs of properties of these functions. In particular we note that the Tu
 tte symmetric function in this form is related to a family of vertex-weigh
 ted graph functions\, from which we derive a recipe theorem and a spanning
 -tree expansion.\n\nThis is joint work with Sophie Spirkl.\n
LOCATION:https://researchseminars.org/talk/YUAAS/11/
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