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a/numbertheory posted by Thomas 1 month ago

Authors: Thomas F. Bloom, Olof Sisask

 

Abstract: We show that if $A\subset \{1,\ldots,N\}$ contains no non-trivial three-term arithmetic progressions then $\lvert A\rvert \ll N/(\log N)^{1+c}$ for some absolute constant $c>0$. In particular, this proves the first non-trivial case of a conjecture of Erdős on arithmetic progressions.

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