Definitions For Preimage

Noun

PREIMAGE (plural PREIMAGEs) (mathematics) For a given function, the set of all elements of the domain that are mapped into a given subset of the codomain; (formally) given a function ƒ : X → Y and a subset B ⊆ Y, the set ƒ−1(B) = {x ∈ X : ƒ(x) ∈ B}. : {{ux, en, The preimage of \{4, 9\} under the function f : \R\rightarrow \R:f(x)=x^2 is the set \{-3,-2,+2,+3\}.}}

Synonyms

set of all elements that map into a given subset of the codomain of a function inverse image

Hyponyms

set of all elements that map into a given subset of the codomain of a function kernel

Derived terms

preimage attack

Related terms

image

Translations

Chinese: : Mandarin: 原像, tr=yuánxiàng Esperanto: prabildo, kontraŭbildo, malbildo Finnish: alkukuva French: préimage, f, image réciproque, f German: Urbild, n Polish: przeciwobraz, m Portuguese: pré-imagem, f Spanish: imagen inversa, f, antiimagen, f, contraimagen, f