摘要
对具有准递减限制的 ｎ 阶排列进行了进一步的研究。
Uiteriorly researched on N order permutation of quasi decreasing limitation,a new combinatorial formula was presented using the method of combinatorial principle in this paper.
出处
《武汉交通科技大学学报》
1999年第4期410-411,共2页
Journal of Wuhan University of Technology(Transportation Science & Engineering)
关键词
组合数学
组合计数
组合恒等式
combinatorial mathematics
combinatorial counting
combinatorial formula
