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,4,1)-DDF的存在性,其中p≡1(mod 12)为质数且n≥1.
By using Weil's theorem on character sum estimates and constructing disjoint difference families with computer, it is proved that there exists a (p^n,4,1)-DDF,where p≡1(mod12) is a prime number and n≥ 1.