%0 Journal Article %A Randall McCutcheon %A Alistair Windsor %T A characteristic factor for the 3-term IP Roth theorem in \(\mathbb{Z}_3^\mathbb{N}\) %J The electronic journal of combinatorics %D 2014 %V 21 %N 3 %U http://geodesic.mathdoc.fr/articles/10.37236/3715/ %R 10.37236/3715 %F 10_37236_3715