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surjection

[ser-jek-shuhn]

noun

Mathematics.

  1. onto function.

surjection

/ ɜːˈɛʃə /

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

“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

surjection

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

  2. Compare bijection injection

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Other Word Forms

  • ܰˈ𳦳پ adjective
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Word History and Origins

Origin of surjection1

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

Origin of surjection1

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

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Surinam toadsurjective

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