On zero-sum free subsets of length 7
Summary: Let \(G\) be a finite additively written abelian group, and let \(X\) be a subset of 7 elements in \(G\). We show that if \(X\) contains no nonempty subset with sum zero, then the number of the elements which can be expressed as the sum over a nonempty subsequence of \(X\) is at least 24.
scientific article; zbMATH DE number 5769519