benchmarks.wiki / Public workspace

Omni-MATH / Find all f:N→N such that f(a)+f(b) divides 2(a+b−1) for all a,b∈N. Remark: N=1,2,3,… denotes the set of the positive integers. · Discussion

Discussing Find all f:N→N such that f(a)+f(b) divides 2(a+b−1) for all a,b∈N. Remark: N={1,2,3,…} denotes the set of the positive integers. · 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.