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Combinatorics of Representation Theory of J-Trivial Monoids

Student-Run Discrete Math Seminar

Speaker: Tom Denton, UC Davis
Location: 2112 MSB
Start time: Fri, Oct 15 2010, 11:00AM

I will discuss the representation theory of J-trivial monoids. These objects do not have the semi-simplicity of groups, but enjoy other properties which make their representation theory both approachable and inherently combinatorial. I will give examples of some J-trivial monoids, including the zero-Hecke monoid, the monoid of regressive order-preserving functions on a poset, and the upper-unitriangular matrices over the boolean semiring.