We say a complex number z is a primitive nth root of unity if but for 0<m<n. Show that is a primitive nth root of unity if and only if gcd(k,n)=1.

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- Jul 1st 2010, 03:18 PMmeggnogPrimitive Roots of Unity and GCD
We say a complex number z is a primitive nth root of unity if but for 0<m<n. Show that is a primitive nth root of unity if and only if gcd(k,n)=1.

- Jul 1st 2010, 05:43 PMchiph588@