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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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2025_04_10_steinerberger: Steinerberger reduces the shift-two case to the equation phi(m) + phi(m + phi(m)) = m, puts every solution into two branches by its odd part, and finds the first branch's solutions, six doubling families; arXiv only.
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