Online talk: Peter Nelson

Mon, May 25 3pm EST (8pm BST, 7am Tue NZST)
Peter Nelson, University of Waterloo
Extensions and coextensions of cliques

The class of matroids that are a single extension or coextension of the cycle matroid of a complete graph is surprisingly rich. I will discuss some Ramsey-theoretic and enumerative results for these objects.

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