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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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1970_07_01_plunnecke: Plünnecke's 1970 theorem bounds the Schnirelmann density of the sumset with a basis of order k below by alpha to the power one minus one over k, which implies the asked increment; refereed in Crelle and recorded by the site.
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