sumset

Let $A_{1},A_{2},\\ldots,A_{n}$ be subsets of an additive group $G$ . The sumset

A_{1}+A_{2}+\\cdots+A_{n}

is the set of all elements of the form $a_{1}+a_{2}+\\cdots+a_{n}$ , where $a_{i}\\in A_{i}$ .

In geometry a sumset is often called Minkowski sum.

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