PSU Mark
Eberly College of Science Mathematics Department

Meeting Details

For more information about this meeting, contact Matthew Katz, Stephanie Zerby, James Sellers, George Andrews.

Title:Pattern avoidance for ascent sequences
Seminar:Combinatorics/Partitions Seminar
Speaker:Andrew Baxter, PSU
Abstract:
In this talk I will introduce ascent sequences (enumerated by the Fishburn numbers), which are connected to several combinatorial objects. Duncan and Steingrimsson initiated study of the number of ascent sequences avoiding certain subsequences, with this work continued by Mansour, Shattuck, and others. I will outline the problem, and discuss joint work with Lara Pudwell on counting ascent sequences avoiding a pair of patterns. I will close with a conjectured formula regarding the last pair of patterns to evade a proof.

Room Reservation Information

Room Number:MB106
Date:03 / 18 / 2014
Time:11:15am - 12:05pm