Difference between revisions of "Injection"
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An '''injection''', or "one-to-one function," is a [[function]] that takes distinct values on distinct inputs. Equivalently, an injection is a function for which every value in the [[range]] is the image of exactly one value in the [[domain]]. | An '''injection''', or "one-to-one function," is a [[function]] that takes distinct values on distinct inputs. Equivalently, an injection is a function for which every value in the [[range]] is the image of exactly one value in the [[domain]]. | ||
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* [[Bijection]] | * [[Bijection]] | ||
* [[Surjection]] | * [[Surjection]] | ||
Revision as of 12:38, 25 September 2007
An injection, or "one-to-one function," is a function that takes distinct values on distinct inputs. Equivalently, an injection is a function for which every value in the range is the image of exactly one value in the domain.
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