On the structure of subsets of an orderable group with some small doubling properties
arXiv:1505.00419 · doi:10.1016/j.jalgebra.2015.07.038
Abstract
The aim of this paper is to present a complete description of the structure of subsets S of an orderable group G satisfying |S^2| = 3|S|-2 and <S> is non-abelian.