Approximation By Riemann Zeta Zeros
The real part of the sum over the zeta zeros:
approximates the von Mangoldt function by summing several waves onto each other (page 346).
The Fourier transform of the von Mangoldt function gives a spectrum with spikes at ordinata equal to imaginary part of the Riemann zeta function zeros. This is sometimes called a duality.
Read more about this topic: Von Mangoldt Function