Type-B analogues of some combinatorial objects related to noncrossing partitions

Rodica Simion

George Washington University

Febrary 19,
refreshments at 3:45pm


Two interesting combinatorial objects having enumerative connections with (type-A) noncrossing partitions are the associahedron and permutations with certain pattern restrictions. We will describe type-B analogues of these objects, and several results relating them to type-B noncrossing partitions. We will discuss further properties which parallel those known for type A.

Speaker's Contact Info: simion(at-sign)math.gwu.edu

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Combinatorics Seminar, Mathematics Department, MIT, sara(at-sign)math.mit.edu

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