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单词 Doubly even
释义

Doubly even

英语百科

Singly and doubly even

(重定向自Doubly even)

In mathematics an even integer, that is, a number that is divisible by 2, is called evenly even or doubly even if it is a multiple of 4, and oddly even or singly even if it is not. (The former names are traditional ones, derived from the ancient Greek; the latter have become common in recent decades.)

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更新时间:2025/6/19 20:44:14