Long sequences having no two nonempty zero-sum subsequences of distinct lengths
Weidong Gao, Siao Hong, Xue Li, Qiuyu Yin, Pingping Zhao · Acta Arithmetica · 2020
Let $G$ be an additive finite abelian group. We denote by $\mathrm {disc}(G)$ the smallest positive integer $t$ such that every sequence $S$ over $G$ of length $|S|\geq t$ has two nonempty zero-sum subsequences of distinct lengths. In this paper, we first