The functional equation also implies that the zeta function has no zeros other than the trivial zeros with negative real part , so all non-trivial zeros lie in the critical strip where s has real part between NUMBER@1 and NUMBER@2 .

The functional equation also says all zeros -LRB- except the `` obvious '' ones -RRB- must be in the critical strip : real part is between NUMBER@1 and NUMBER@2 .
