An approximate functional equation for Dirichlet L-functions

A new asymptotic formula is derived for the computation of Dirichlet L-functions, L(s,X), where s = σ + it. The formula is applicable for large values of t and it has been used on the Mercury computer at Manchester University to calculate the zeros of the L-functions with moduli 3 and 4 on the line Rs = ½. The results have been placed in the Royal Society Depository for Unpublished Mathematical Tables (no. 83).

[1]  Carl Ludwig Siegel,et al.  Contributions to the Theory of the Dirichlet L-Series and the Epstein Zeta-Functions , 1943 .

[2]  D. H. Lehmer Extended computation of the Riemann zeta-function , 1956 .

[3]  The evalution of Dirichlet L-functions , 1961, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences.

[4]  J. Miller,et al.  Tables of the Riemann zeta function , 1961 .