Eulerian polynomials on segmented permutations
Combinatorics
2018-05-07 v1
Abstract
We define a generalization of the Eulerian polynomials and the Eulerian numbers by considering a descent statistic on segmented permutations coming from the study of 2-species exclusion processes and a change of basis in a Hopf algebra. We give some properties satisfied by these generalized Eulerian numbers. We also define a -analog of these Eulerian polynomials which gives back usual Eulerian polynomials and ordered Bell polynomials for specific values of its variables. We also define a noncommutative analog living in the algebra of segmented compositions. It gives us an explicit generating function and some identities satisfied by the generalized Eulerian polynomials such as a Worpitzky-type relation.
Cite
@article{arxiv.1805.01797,
title = {Eulerian polynomials on segmented permutations},
author = {Arthur Nunge},
journal= {arXiv preprint arXiv:1805.01797},
year = {2018}
}
Comments
12 pages