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SUMMARY:Christopher Eur (Stanford)
DTSTART:20201210T163000Z
DTEND:20201210T173000Z
DTSTAMP:20260423T005803Z
UID:notts_ag/40
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/notts_ag/40/
 ">Tautological bundles of matroids</a>\nby Christopher Eur (Stanford) as p
 art of Online Nottingham algebraic geometry seminar\n\n\nAbstract\nRecent 
 advances in matroid theory via tropical geometry broadly fall into two the
 mes: One concerns the K-theory of Grassmannians\, and the other concerns t
 he intersection theory of wonderful compactifications.  How do these two t
 hemes talk to each other?  We introduce the notion of tautological bundles
  of matroids to unite these two themes.  As a result\, we give a geometric
  interpretation of the Tutte polynomial of a matroid that unifies several 
 previous works as its corollaries\, deduce new log-concavity statements\, 
 and answer few conjectures in the literature.  This is an ongoing project 
 with Andrew Berget\, Hunter Spink\, and Dennis Tseng.\n
LOCATION:https://researchseminars.org/talk/notts_ag/40/
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