Definition:Riemann Zeta Function/Critical Line

Hypothesis
Consider the Riemann zeta function $\zeta \left({s}\right)$.

The line defined by the equation $z = \dfrac 1 2 + i y$ is known as the critical line.

Hence the popular form of the statement of the Riemann Hypothesis:
 * "All the nontrivial zeroes of the Riemann zeta function lie on the critical line."