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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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1981_01_01_konyagin: Proves that the L1 norm of a sum of N distinct exponentials is at least an absolute constant times the logarithm of N, Littlewood's conjecture, through dyadic averaging projections; refereed, credited by the site.

1981_05_01_mcgehee_pigno_smith: Proves Littlewood's conjecture that the L1 norm of a sum of N distinct exponentials is at least a constant times the logarithm of N, through a Hardy-type inequality; refereed in the Annals, credited by the site.