Mathematics – Number Theory
Scientific paper
2009-12-24
Mathematics
Number Theory
21 pages, to appear in J. London Math. Soc., short remark added and typos fixed
Scientific paper
In this paper we show that if $A$ is a subset of the primes with positive relative density $\delta$, then $A+A$ must have positive upper density $C_1\delta e^{-C_2(\log(1/\delta))^{2/3}(\log\log(1/\delta))^{1/3}}$ in $\mathbb{N}$. Our argument applies the techniques developed by Green and Green-Tao used to find arithmetic progressions in the primes, in combination with a result on sums of subsets of the multiplicative subgroup of the integers modulo $M$.
Chipeniuk Karsten
Hamel Mariah
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