surjection

American  

[ser-jek-shuhn] / sərˈdʒɛk ʃən /

noun

Mathematics.

1. onto function.

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surjection British  

/ 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

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surjection Scientific  

/ 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 injection

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Other Word Forms

• surjective
  adjective

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Etymology

Origin of surjection

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

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