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- DictionaryOr·dered pair/ˈôrdərd per/
noun
- 1. a pair of elements a, b having the property that (a, b) = (u, v) if and only if a = u, b = v.
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noun
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Pair of mathematical objects; tuple of specific length
In mathematics, an ordered pair (a, b) is a pair of objects. The order in which the objects appear in the pair is significant: the ordered pair (a, b) is different from the ordered pair (b, a) unless a = b. (In contrast, the unordered pair {a, b} equals the unordered pair {b, a}.) Ordered pairs are also called 2-tuples, or sequences (sometimes, lists in a computer science context) of length 2. Ord... Wikipedia