Definition:Preimage/Mapping

Definition
Let $f: S \to T$ be a mapping.

Let $f^{-1} \subseteq T \times S$ be the inverse of $f$, considered as a relation:


 * $f^{-1} = \left\{{\left({t, s}\right): f \left({s}\right) = t}\right\}$

Also known as
A preimage is also known as an inverse image.

Also see

 * Definition:Preimage under Relation


 * Definition:Domain (Set Theory)
 * Definition:Codomain (Set Theory)
 * Definition:Range


 * Definition:Image