Category:Ordered Pairs

This category contains results about Ordered Pairs.
Definitions specific to this category can be found in Definitions/Ordered Pairs.

An ordered pair is a two-element set together with an ordering.

In other words, one of the elements is distinguished above the other - it comes first.

Such a structure is written:

$\tuple {a, b}$

and it means:

first $a$, then $b$.