The General Theory of Dirichlet Series

IT is well known that Dirichlet made a new start in the theory of numbers by bringing it into connection with certain analytical functions of the form??? being an integer, and s a h real quantity. In the present tract the definition of a Dirichlet series isThe General Theory of Dirichlet Series.By G. H. Hardy Marcel Riesz. Pp. x + 78. (Cambridge: At the University Press, 1915.) Price 3s. 6d. net.