English

Green's sumset problem at density one half

Number Theory 2010-12-03 v2

Abstract

We investigate the size of subspaces in sumsets and show two main results. First, if A is a subset of F_2^n with density at least 1/2 - o(n^{-1/2}) then A+A contains a subspace of co-dimension 1. Secondly, if A is a subset of F_2^n with density at least 1/2-o(1) then A+A contains a subspace of co-dimension o(n).

Keywords

Cite

@article{arxiv.1003.5649,
  title  = {Green's sumset problem at density one half},
  author = {Tom Sanders},
  journal= {arXiv preprint arXiv:1003.5649},
  year   = {2010}
}

Comments

10 pp. Corrected typos

R2 v1 2026-06-21T15:04:08.078Z