surjection

[ ser-jek-shuhn ]

nounMathematics.

onto function.

Origin of surjection

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

Words Nearby surjection

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British Dictionary definitions for surjection

surjection

/ (sɜːˈdʒɛkʃən) /

noun

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 (def. 5), bijection

Origin of surjection

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

Derived forms of surjection

surjective, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for surjection

surjection

[ sər-jĕk′shən ]

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

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