Idempotence
Revision as of 19:36, 19 September 2008 by Herefishyfishy1 (talk | contribs) (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...)
A function 
is idempotent if 
.
Examples
- Any constant function is idempotent.
- The function
is idempotent. - The signum function is idempotent.
- The absolute value function is idempotent.
- The greatest integer function is idempotent, as is the least integer function.
is idempotent.
