The main purpose of this paper is to use the generalized Bernoulli numbers, Gauss sums and the mean value theorems of Dirichlet L-functions to study the asymp- totic property of the difference between an r-th residue and its inverse modulo p(a prime),and give some interesting hybrid mean value formulae involving the general Kloosterman sums.
Xi Feng XUE.
Hybrid Mean Value on the Difference Between an r-th Residue and Its Inverse Modulo p. Acta Mathematica Sinica, Chinese Series, 2007, 50(6): 1411-141 https://doi.org/10.12386/A2007sxxb0165