1. School of Mathematical Sciences, Liaocheng University, Liaocheng, 252059, P. R. China 2. School of Mathematical Sciences, Beijing Normal University, Beijing, 100875, P. R. China
Abstract:
The generic Newton polygon of L-functions associated with the exponential sums of polynomials of degree 3 in two variables is studied by Dwork’s analytic methods. Wan’s conjecture is shown to be true for this case.