Authors:Rui Chi, Shuyan Ding, Weidong Gao, Alfred Geroldinger, and Wolfgang A. Schmid
Summary For a finite abelian group G, we investigate the invariant s(G) (resp. the invariant s0(G)) which is defined as the smallest integer l ? N such that every sequence S in G of length |S| = l has a subsequence T with sum zero and length |T|= exp(G) (resp. length |T|=0 mod exp(G)).