An **endofunction** (or **self-mapping** or other variation) is an endomorphism in the category of sets, that is a function from a set $X$ to $X$ itself. This is the typical meaning of the word ‘function’ in some contexts, such as high-school algebra (where $X$ is the set of real numbers, although there we actually use partial functions) or when distinguishing from the higher-order concepts of functional and operator.

Last revised on November 23, 2015 at 21:20:29. See the history of this page for a list of all contributions to it.