OP-01028 Partially resolved The Erdős–Moser problem: a large subset avoiding its own restricted sums in A NT · additive combinatorics · Erdős–Moser problem · restricted sumsets · sum-free sets
OP-01029 Solution claimed Open subsets of [0, 1] of measure above 1/3 contain a solution of xy = z CA · additive combinatorics · measure theory · product-free sets · sum-free sets
OP-01030 Solution claimed The largest sum-free subset of the lattice cube CO · extremal combinatorics · lattice points · sum-free sets