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SUMMARY:Joseph Bonin (The George Washington University)
DTSTART:20230321T190000Z
DTEND:20230321T200000Z
DTSTAMP:20260423T023941Z
UID:Matroids/42
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/Matroids/42/
 ">An overview of recent developments on non-isomorphic matroids that have 
 the same G-invariant</a>\nby Joseph Bonin (The George Washington Universit
 y) as part of Matroids - Combinatorics\, Algebra and Geometry Seminar\n\nL
 ecture held in Room 210 The Fields Institute.\n\nAbstract\nThe G-invariant
 \, which was introduced by Derksen\, is a matroid invariant that contains 
 all of the data in the Tutte polynomial\, and far more.  The theory of chr
 omatic uniqueness and chromatic equivalence for graphs\, based on the chro
 matic polynomial\, has been developed extensively\, and there are many res
 ults for the analogous notions using the Tutte polynomial\, for both graph
 s and matroids.  The corresponding questions for the G-invariant are ripe 
 for exploration. This talk will survey recent results that yield non-isomo
 rphic matroids that have the same G-invariant\, all aimed at shedding ligh
 t on what minimal structure determines the G-invariant.\n
LOCATION:https://researchseminars.org/talk/Matroids/42/
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