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]].
  
==See also==
 
 
* [[Bijection]]
 
* [[Bijection]]
 
* [[Surjection]]
 
* [[Surjection]]

Revision as of 13:38, 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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