Definition from Wiktionary, the free dictionary
This term was introduced by Nicolas Bourbaki in his treatise Éléments de mathématique.
surjection (plural surjections)
- (mathematics) A function of "many-to-one" mapping relationship; more formally, f: X → Y is a surjection if and only if, for every y in the codomain Y, there is at least one x in the domain X with f(x) = y.
function of "many-to-one" mapping relationship
surjection f (plural surjections)