Li coefficients as norms of functions in a model space

Abstract

It is known that the nonnegativity of Li coefficients is a necessary and sufficient condition for the Riemann hypothesis. We show that it is a necessary and sufficient condition for the Riemann hypothesis that all Li coefficients are norms of certain concrete functions on the real line. Such conditional formulas for Li coefficients are understood as a kind of Weil's criterion for the Riemann hypothesis.