Most of computational method of nontrivial zeros may approximate to actual . However is there is any method to check the accuracy of nontrivial computation?
It has zeros at the negative even integers; that is, ζ(s) = 0 when s is one of −2, −4, −6, .... These are called its trivial zeros. However, the negative even integers arenot the only values for which the zeta function is zero. The other ones are callednon-trivial zeros.