Derivative polynomials and enumeration of permutations by their alternating descents
Combinatorics
2015-04-10 v1
Abstract
In this paper we present an explicit formula for the number of permutations with a given number of alternating descents. Moreover, we study the interlacing property of the real parts of the zeros of the generating polynomials of these numbers.
Keywords
Cite
@article{arxiv.1504.02372,
title = {Derivative polynomials and enumeration of permutations by their alternating descents},
author = {Shi-Mei Ma and Yeong-Nan Yeh},
journal= {arXiv preprint arXiv:1504.02372},
year = {2015}
}
Comments
6 pages