ordered pair

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Related to Unordered pair: Ordered pair

ordered pair

[′ȯrd·ərd ′per]
(mathematics)
A pair of elements x and y from a set, written (x,y), where x is distinguished as first and y as second.
References in periodicals archive ?
Actually, the Cartesian product is unordered, in the sense that A X B is always the same as B X A, so that J is really a set of unordered pairs of elements.
This means that the left hand side of (2) is also the (weighted) number of unordered pairs ([F.
For each unordered pair {u, v} of distinct vertices, the 2-cycle hu, v, ui fails to be present in D with probability 1 - [p.
A graph G is a pair (V (G), E (G)) of a set V (G) of vertices and a set E(G) of unordered pairs of vertices, called edges.
A graph is an ordered pair of disjoint sets such that is a subset of the set of unordered pairs of ; the set is the set of vertices and is the set of edges.
In our model, for any specified n loci, there exists a list L of all the unordered pairs of strictly distinct alleles that are incompatible.