Restricted-sum-dominant sets

Raj Kumar Mistri, R. Thangadurai

Let $A$ be a nonempty finite subset of an additive abelian group $G$. Define $A+A:=\{a+b:a,b\in A\}$ and $A\dotplus A:=\{a+b:a,b\in A\text{and}a\ne b\}$. Th…