Binary relation

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created: 2021-11-14 20:13:03
modified: 2022-01-10 04:13:04

A binary relation between sets and is a subset of the Cartesian product , i.e. it is a set of ordered pairs , where and .

It encodes a common concept of relation: an element is related to the element if and only if the pair is among the ones defining the binary relation.