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1 of a binary relation R, a subset of S1 × S2, say. The subset of S2 consisting of all elements to which some element of S1 is related. If R is the relation “is the wife of” defined from men to women, the range of R is the set of married women.

Since a function is a special kind of relation, the range of f : XY can be written as {y | yY and y = f(x) for some x in X}

f : XY

{y | yY and y = f(x) for some x in X}

2 See measures of variation.

Subjects: Computing.

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