The Divisor Matrix, Dirichlet Series and SL(2,Z), II

Abstract

We examine an elliptic curve constructed in an earlier paper from a certain representation of $\SL(2,\Z)$ on the space of convergent Dirichlet series. The curve is observed to be a modular curve for ${\Gamma }^1(15)$ and a certain orbit of modular functions is thereby associated with the Riemann zeta function. Explicit descriptions are given of these functions and of the permutation action of $\SL(2,\Z)$ on them.

11 pages.v8 is a minor revison of v7. The paper (v7 on) has different content from the earlier paper (v1-5) of the same title. The earlier versions were combined with 0712.0837