On subsets of abelian groups with no 3-term arithmetic progression

@article{Frankl1987OnSO,
  title={On subsets of abelian groups with no 3-term arithmetic progression},
  author={Peter Frankl and Ronald L. Graham and Vojtech R{\"o}dl},
  journal={J. Comb. Theory, Ser. A},
  year={1987},
  volume={45},
  pages={157-161}
}
A short proof of the following result of Brown and Buhler is given: For any E > 0 there exists n, = no(E) such that if A is an abelian group of odd order IAl > no and BG A with IBI >&IAI. then B must contain three distinct elements X, y, z satisfying x + y = 22.