Classifying Descents According to Parity
组合数学
2007-05-23 v1
摘要
In this paper we refine the well-known permutation statistic "descent" by fixing parity of (exactly) one of the descent's numbers. We provide explicit formulas for the distribution of these (four) new statistics. We use certain differential operators to obtain the formulas. Moreover, we discuss connection of our new statistics to the Genocchi numbers. We also provide bijective proofs of some of our results.
关键词
引用
@article{arxiv.math/0508570,
title = {Classifying Descents According to Parity},
author = {Sergey Kitaev and Jeffrey Remmel},
journal= {arXiv preprint arXiv:math/0508570},
year = {2007}
}
备注
22 pages