On the number of subsequences with given sum
Let \(G\) be a finite Abelian group of order \(n\) and let \(\sigma\) be a sequence of elements of \(G\) of length \(2n-1\). The author obtains a lower bound for the number of subsequences of \(\sigma\) of length \(n\) with a given sum.
scientific article; zbMATH DE number 1320582