On finite subsets of nonabelian groups with small doubling

Freiman, Gregory

doi:10.1090/S0002-9939-2012-11156-6

On finite subsets of nonabelian groups with small doubling
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by Gregory A. Freiman PDF

Proc. Amer. Math. Soc. 140 (2012), 2997-3002 Request permission

Abstract:

We give a detailed and clear exposition of the basic result describing the structure of a finite subset $A$ of a nonabelian group $G$ with a small doubling $|A^2| < 1.5 |A|$.

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