**Speaker**: Weidong Gao (高维东), Nankai University

**Date**: Fri, Jun 15, 2018

**Time**: 15:00 - 16:00

**Venue**: Middle Meeting Room

**Title**: Zero-sum subsequences of distinct lengths

**Abstract**:

Let $G$ be an additive finite abelian group, and let $\mbox{disc}(G)$ denote 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. We present some recent results and some open problems on $\mbox{disc}(G)$.

**Slides**:
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