英语词汇“derangement numbers”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	derangement numbers
释义	derangement numbers derangement numbers [di′rānj·mənt ‚nəm·bərz] (mathematics) The numbers D_n, n = 1, 2, 3, …, giving the number of permutations of a set of n elements that carry no element of the set into itself.
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