摘要

Let p be a prime number and l be any positive integer. Let G be the cyclic group of order p(l) and let S be any sequence in G of length p(l) + k for some positive integer k >= p(l-1) - 1 such that S do not admit a subsequence of length p(l) whose sum is zero in G. Then we prove that there exists an element of G which appears in S at least k + 1 times.