... stack flexographic press 层叠式柔性版印刷机 staggered arrangement 错排 standard page 标准页 ...
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利用反演技巧与生成函数，把Vinh关于错排数的两个恒等式推广到更一般的情况。
By inverse technique and generating function, we generalize Vinh's two identities of derangements to a more setting.
变更错排问题的限制条件，利用棋子多项式的性质建立递推关系，推出两个问题的排列数公式。
The limited condition of alternate permutation to utilize character of chessman polgnomial sets up recurrence relations and educes two math question about formula of permutation figure.
对话的文字完全按照当时鉴定人员和人工智能程序文字输出的情形记录下来，包括拼错的单字和错排。
The following text is printed exactly as it was created by the judges and the AI programs, including misspellings and typographical errors.
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