利用乘法特征和的Weil定理,结合计算机搜索来构造不相交差族,证明不相交差族(p^n,4,2)-DDF的存在性,其中P=1(mod6)为质数且n≥1.
By using Weil's theorem on character sum estimates, it is proved that there exists a (p^n, 4,2)-DDF, where p ≡ 1 (rood 6) is a prime number and n ≥ 1.