Systems Analysis and Synthesis

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2.4. Relations and Functions

2.4.1. Cartesian Products

The Cartesian product of two sets,

X

and

Y

, denoted by

X \times Y

, is the set of all ordered pairs

(x, y)

, where

x

is an element of

X

and

y

is an element of

Y

:⁸

$X \times Y = {(x, y) ∣ x \in X \land y \in Y}$

(2.4.1)

For example, if

Children ...

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