surjection

[ ser-jek-shuhn ]

noun

, Mathematics.

1. onto function.

surjection

/ sɜːˈdʒɛkʃən /

noun

1. a mathematical function or mapping for which every element of the image space is a value for some members of the domain See also injection bijection

surjection

/ sər-jĕk′shən /

1. A function such that each member of its range is mapped onto by a member of the domain.
2. Compare bijection

Derived Forms

• surˈjective, adjective

Word History and Origins

Origin of surjection¹

1960–65; sur- ¹ + -jection, as in injection, projection, etc.

Word History and Origins

Origin of surjection¹

C20: from sur- ¹+ -jection, on the model of projection