# Difference between revisions of "Domain"

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− | + | Let $X$ and $Y$ be sets and let $f \colon X \rightarrow Y$ be a [[function]]. We say that $X$ is the domain of $f$. | |

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+ | [[Category:Definition]] |

## Latest revision as of 02:42, 24 December 2018

Let $X$ and $Y$ be sets and let $f \colon X \rightarrow Y$ be a function. We say that $X$ is the domain of $f$.