On the number of subsequences with a given sum in a finite abelian group

Gerard Jennhwa Chang, Sheng-Hua Chen, Yongke Qu +2

Suppose $G$ is a finite abelian group and $S$ is a sequence of elements in $G$. For any element $g$ of $G$, let $N_g(S)$ denote the number of subsequences of $S$ with sum $g$. The…