On General Polynomials
Kenneth S. Williams · Canadian Mathematical Bulletin · 1967
Let d denote a fixed integer > 1 and let GF(q) denote the finite field of q = pn elements. We consider q fixed ≥ A(d), where A(d) is a (large) constant depending only on d. Let 1 where each aiεGF(q). Let nr(r = 2, 3, …, d) denote the number of solutions in GF(q) of for which x1, x2, …, xr are all different.