  In the present work the Riemanns hypothesis (RH) is discussed from four
different perspectives. In the first case, coherent states and the Stengers
approximation to Riemann-zeta function are used to show that RH avoids an
indeterminacy of the type 0/0 in the inner product of two coherent states. In
the second case, the Hilber-Polya conjecture with a quantum circuit is
considered. In the third case, randomness, entanglement and the Moebius
function are used to discuss the RH. At last, in the fourth case, the RH is
discussed by inverting the first derivative of the Chebyshev function. The
results obtained reinforce the belief that the RH is true.
