$q$-错位数的比单调性
组合数学
2007-10-04 v3
摘要
我们证明了 -错位数满足比单调性质，该类比于对数凹性，且强于螺旋性质和单峰性。
引用
@article{arxiv.0708.2572,
title = {The Ratio Monotonicity of the $q$-Derangement Numbers},
author = {William Y. C. Chen and Ernest X. W. Xia},
journal= {arXiv preprint arXiv:0708.2572},
year = {2007}
}
备注
16 pages. log-concavity possibly except for one term is added as a corollary