Mathematicians are interested in those values of formula_3 for which the function is equal to zero. The Riemann hypothesis conjectures that all the "non-trivial zeros" lie on the critical line formula_14, meaning they are guessed to be of the form formula_15 for some real value "t". It is already known that all of the non-trivial zeroes must lie in a region called the "critical strip" for which formula_16. So far, all of the computed nontrivial zeros are on the critical line. 