Contents

# Contents

## Idea

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 16:20:29. See the history of this page for a list of all contributions to it.