Effective Results

In this chapter, we shall use ideas from the previous chapter in order to obtain certain effective results on the value-distribution of L-functions. The first sections deal with the density of the approximating τ in universality theorems. The derived upper bounds are due to Steuding [342, 350]. In the following sections explicit estimates for c-values in the half-plane of absolute convergence are obtained. These results are due to Girondo and Steuding [100] and rely on a theorem of Rieger [310], resp. a quantified version of Steuding [344], on e.ective inhomogeneous diophantine approximation.