In chapter 3,we summary the definition and properties of restricted permutations and derangements,at the same time,we prove two indentities of derangement.
2.在第三章,对有禁排列和错排的定义及性质给予归纳总结,同时证明了错排的两个重要的恒等式。
参考来源 - Fine格路和有禁错排·2,447,543篇论文数据,部分数据来源于NoteExpress
以上来源于: WordNet
N-UNCOUNT Derangement is the state of being mentally ill and unable to think or act in a controlled way. 精神错乱 [老式]
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