OP-00937 Open A long gap in a dilate of a square-root-sized set modulo a prime NT · cyclic groups of prime order · dilates · gaps · polynomial method
OP-00938 Open Additive bases of cyclic groups of nearly optimal size NT · additive bases · cyclic groups · Sidon sets · sumsets
OP-00939 Open Covering a cyclic group by few translates of a random set CO · covering · cyclic groups of prime order · random sets · translates