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Product set

Revision as of 23:01, 10 June 2008 by Asymptosis (talk | contribs) (New page: A set product, or the product set, <math>A \times B</math> of two sets <math>A</math> and <math>B</math>, is the set of ordered pairs <math>\{(a,b): a \in A, b \in B\}</math>. For example...)
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A set product, or the product set, $A \times B$ of two sets $A$ and $B$, is the set of ordered pairs $\{(a,b): a \in A, b \in B\}$.

For example, if $A = \{1, 2\}$ and $B = \{x, y\}$, then $A \times B = \{(1,x),(2,x),(1,y),(2,y)\}$.

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