Injective (English)
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Definition (keystage 3)
A mapping from a set A to a set B is injective if each element of A maps onto a different element of B.
Definition (undergraduate level)
A mapping f : A → B is injective if it satisfies f(p)=f(q) \implies p=q for all p,q ∈ A . Compare bijective, surjective.
Relations
- broader:
- (en) Property of function or process
- narrower:
- (en) Bijective
- references:
- (en) Injection
- (en) Monomorphism
- see also:
- (en) Onto
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