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单词 DescendingOrder
释义

descending order


A sequence or arbitrary ordered set or one-dimensional array of numbers, a, is said to be in descending orderPlanetmathPlanetmath if each aiai+1. For example, the aliquot sequence of 259 is in descending order: 45, 33, 15, 9, 4, 3, 1, 0, 0, 0 … The aliquot sequence starting at 60, however, is not in descending order: 108, 172, 136, 134, 70, 74, 40, 50, 43, 1, 0, 0, 0 …

In a trivial sense, the sequence of values of the sign function multiplied by -1 is in descending order: … 1, 1, 1, 0, –1, –1, –1… When each ai>ai+1 in the sequence, set or array, then it can be said to be in strictly descending order.

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更新时间:2025/7/7 4:37:59