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Research notes on every problem, and a library of the papers behind them. Built from the open erdos repository.
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2026_04_13_monticone: Taking A to be all natural numbers and g(n) = n + 1 makes the representation count equal g(n) at every n, so the set has density one and both answers are no; posted with a Lean file produced with Aristotle, adopted by the curator.
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