New posts in Sumset

In how many different from a set of numbers can a fixed sum be achieved?

Is the measure of the sum equal to the sum of the measures?

If $C$ is the Cantor set, then $C+C=[0,2]$.

Sum of closed and compact set in a TVS

Closed sum of sets

How can I prove $\sup(A+B)=\sup A+\sup B$ if $A+B=\{a+b\mid a\in A, b\in B\}$

Measure of the Cantor set plus the Cantor set