preimage

Meaning

Noun

For a given function, the set of all elements of the domain that are mapped into a given subset of the codomain; given a function ƒ : X → Y and a subset B ⊆ Y, the set ƒ⁻¹(B) = {x ∈ X : ƒ(x) ∈ B}.

Related

Similar words

inverse image

Narrower meaning words

kernel

Origin

pre- + image.

Modern English dictionary

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