Surjection




<mathematics> A function f : A -> B is surjective or onto or a surjection if f A = B.

I.e. f can return any value in B. This means that its image is its codomain.

Only surjections have right inverses, f' : B -> A where f (f' x) = x since if f were not a surjection there would be elements of B for which f' was not defined.

See also bijection, injection.



< Previous Terms Terms Containing surjection Next Terms >
support
supremum
Sure
surfing
SURGE
aleph 0
bijection
injection
inverse
onto
surjective
surrogate key
suspension
Suzie COBOL
sv