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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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2024_09_09_wigderson: Wigderson's 2024 theorem that infinitely many graphs are not Ramsey size linear while every proper subgraph is, answering Problem 79 yes; refereed in European J. Combin. 128 (2025) and labeled PROVED by the site.