Published online by Cambridge University Press: 22 January 2016
The evaluation of the integral
(1.1)
represents one of the fundamental problems of the theory of the Riemann zeta-function (see [4] for a comprehensive account). In view of the functional equation
it is clear that one has to distinguish between the following three principal cases:
a) σ = 1/2 (“the critical line”),
b) 1/2 < σ < 1 (“the critical strip”),
c) σ = 1.