New posts in sumset

Prove that the sum of two compact sets in $\mathbb R^n$ is compact.

real-analysis compactness sumset

If an infinite set $S$ of positive integers is equidistributed, is $S+S$ also equidistributed?

number-theory modular-arithmetic additive-combinatorics sumset

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

real-analysis elementary-set-theory cantor-set sumset

If $A$ and $B$ are compact, then so is $A+B$.

functional-analysis compactness topological-vector-spaces sumset

Prove that $Sup(A + B) = Sup(A) + Sup(B)$

real-analysis supremum-and-infimum sumset

Following up with a previous question on $\sup(A)+\sup(B) = \sup(A + B)$

real-analysis supremum-and-infimum sumset

Is the sum (difference) of Borel set with itself a Borel set?

descriptive-set-theory borel-sets sumset

Two sets $X,Y \subset [0,1]$ such that $X+Y=[0,2]$

real-analysis measure-theory sumset

Number of vectors so that no two subset sums are equal

combinatorics puzzle additive-combinatorics sumset

Cantor set + Cantor set =$[0,2]$

real-analysis cantor-set sumset

Example where closure of $A+B$ is different from sum of closures of $A$ and $B$

general-topology examples-counterexamples sumset

Closed sum of sets

analysis compactness sumset

Sum of closed and compact set in a TVS

functional-analysis compactness topological-vector-spaces sumset

Measure of the Cantor set plus the Cantor set

real-analysis measure-theory sumset

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

real-analysis supremum-and-infimum sumset