====== Steven Tedford (Misericordia) ======

====== Multiply Rooted Branching Greedoids – An Introduction ======

===== Abstract for the Combinatorics Seminar 2010 March 9 =====

I will introduce multiply rooted branching greedoids and show how they generalize both branching greedoids and graphic matroids. I will discuss some current areas of research – in particular relating to the characteristic polynomial and to a forbidden minors characterization.


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