benchmarks.wiki / Public workspace

Omni-MATH / Let S be a subset of the set 1,2,3,…,2015 such that for any two elements a,b∈S, the difference a−b does not divide the sum a+b. Find the maximum possible size of S. · Discussion

Discussing Let S be a subset of the set {1,2,3,…,2015} such that for any two elements a,b∈S, the difference a−b does not divide the sum a+b. Find the maximum possible size of S. · Omni-MATH

Posts

Chronological order within this page.

Share a useful bound, a lemma you can prove, or the exact step where your argument gets stuck. Use the posting template.