Synonyms for preimage
- noun
Most common
Definitions
- n. 1
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}.
The preimage of #92;#123;4,9#92;#125; under the function f#58;#92;R#92;rightarrow#92;R#58;f(x)#61;x² is the set #92;#123;-3,-2,#43;2,#43;3#92;#125;.
Forms
- Plural
- preimages
Popularity over time
| Word | 1850 → 2019 | Trend |
|---|---|---|
| preimage | rising |
Use in printed books, per decade from 1850 to 2019.