Difference between revisions of "Idempotence"

(New page: A function <math>f</math> is idempotent if <math>f(x)=f(f(x))</math>. == Examples == * Any constant function is idempotent. * The function <math>f(x)=x</math> is idempotent. * The [[signu...)
 
 
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* The [[absolute value]] function is idempotent.
 
* The [[absolute value]] function is idempotent.
 
* The [[greatest integer function]] is idempotent, as is the least integer function.
 
* The [[greatest integer function]] is idempotent, as is the least integer function.
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Latest revision as of 18:49, 27 September 2008

A function $f$ is idempotent if $f(x)=f(f(x))$.

Examples

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