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| − | === | + | ===[[Euler's totient function]]=== |
| − | + | '''Euler's totient function''' <math>\phi(n)</math> applied to a [[positive integer]] <math>n</math> is defined to be the number of positive integers less than or equal to <math>n</math> that are [[relatively prime]] to <math>n</math>. <math>\phi(n)</math> is read "phi of n."... [[Euler's totient function|[more]]] | |
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Revision as of 19:54, 30 January 2008
Euler's totient function
Euler's totient function
applied to a positive integer
is defined to be the number of positive integers less than or equal to
applied to a 
is defined to be the number of positive integers less than or equal to 
