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The '''cartesian product''' of 2 sets ''A'' and ''B'' is the set (usually denoted by ''A × B'') consists of all pairs ''(a, b)'' where <math>a \in A</math> and <math>b \in B</math>.
The '''cartesian product''' of 2 sets ''A'' and ''B'' is the set (usually denoted by ''A × B'') consists of all ordered pairs ''(a, b)'' where <math>a \in A</math> and <math>b \in B</math>.
[[category:set theory]]
[[category:set theory]]