Source: wikibot/functions-and-mappings
= Functions and mappings
{wiki=Functions_and_mappings}
Functions and mappings are fundamental concepts in mathematics, often used interchangeably, though they can have slightly different connotations depending on the context. \#\#\# Functions A **function** is a specific type of relation between two sets that assigns exactly one output from a set (the codomain) to each input from another set (the domain).