noun, noun which may take the genitive case particle 'no'
surjection; onto mapping; epimorphism
Mathematics term for a function where every element of the codomain is mapped to by at least one element of the domain. Used in set theory and category theory.
この写像は全射である。
This mapping is a surjection.
全射の定義を確認してください。
Please check the definition of surjection.