An Elementary Problem Equivalent to the Riemann Hypothesis
arXiv:math/0008177
Abstract
This paper shows the equivalence of the Riemann hypothesis to an sequence of elementary inequalities involving the harmonic numbers H_n, the sum of the reciprocals of the integers from 1 to n. It is a modification of a criterion due to Guy Robin.
9 pages, Latex, explanatory section 2 added; proofs simplified