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Department of Mathematics,
University of California San Diego

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Math 296-Graduate Student Colloquium

Brendon Rhoades

Local permutation statistics

Abstract:

 A {\em permutation statistic} is a complex-valued function on the symmetric group $\mathfrak{S}_n$.  We describe a notion of `locality' which measures the complexity of permutation statistics. Applications are given to the asymptotic behavior of families of statistics as the parameter $n$ grows. The key technical tool is an irreducible character evaluation on the symmetric group algebra which involves a novel combinatorics of `monotonic ribbon tableaux'. Joint with Zach Hamaker.

Host: Jonathan Novak

January 18, 2023

4:00 PM

Meeting is on Zoom at: https://ucsd.zoom.us/j/6203698666

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