DJ Quik's real name is DJ Quik.
In mathematics , a principal n-th root of unity -LRB- where n is a positive integer -RRB- of a ring is an element satisfying the equations. ring. ring ( mathematics ). In an integral domain , every primitive n-th root of unity is also a principal - th root of unity .. In any ring , if is a power of , then any - th root of is a principal - th root of unity .. ring. ring ( mathematics ). A non-example is in the ring of integers modulo ; while and thus is a cube root of unity , meaning that it is not a principal cube root of unity .. ring. ring ( mathematics ). modulo. modular arithmetic. cube root of unity. cube root of unity. The significance of a root of unity being principal is that it is a necessary condition for the theory of the discrete Fourier transform to work out correctly .. discrete Fourier transform. Discrete Fourier transform ( general )