Monday, October 3, 2016 at 3:00 PM in SAS 4201

Emily Meehan, NC StateBaxter posets

In this talk, we define a family of combinatorial objects, which we call Baxter posets. We prove that the Baxter numbers count Baxter posets by demonstrating that Baxter posets are the adjacency posets of diagonal rectangulations. Several known families of Baxter objects are closely related to Catalan combinatorics, and we motivate the definition of Baxter posets by summarizing some of these relationships. Given a diagonal rectangulation, we will describe the cover relations in the associated Baxter poset. We will also describe a method for obtaining the Baxter permutation associated to a Baxter poset.

Monday, October 10, 2016 at 3:00 PM in SAS 4201

Alexander Garver, University of MinnesotaTBA

Monday, October 17, 2016 at 3:00 PM in SAS 4201

Jinwei Yang, University of Notre DameTBA

Monday, November 7, 2016 at 3:00 PM in SAS 4201

Naihuan Jing, NC StateTBA

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Seminar Organizers: Bojko Bakalov and Ricky Liu