surjective
1 synonym for surjective, grouped by meaning and by how common each one is.
Adjective — In mathematics, describes a function whose entire output set is covered, so every element in it is reached by at least one element from the input.
Synonyms
Everyday swaps
Common words most readers know — safe in any writing.
How to use surjective
The word patterns that sound natural to a native speaker.
surjective function
surjective map
not surjective
This is a technical mathematical term used almost exclusively in formal or academic contexts.
Frequently asked questions
What does surjective mean in maths?
It describes a function where every element of the output set is produced by at least one element of the input set.
What is the difference between surjective and injective?
Surjective means every output value is reached by some input, while injective means no two different inputs give the same output; a function that is both is called bijective.
Is there another word for surjective?
Yes, mathematicians also call it onto.
