🇬🇧 en fr 🇫🇷

preimage noun

  • (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}.
 image réciproque, préimage

🇫🇷 fr en 🇬🇧

préimage noun {f}

  /pʁe.i.maʒ/
preimage
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