An analytic approach to a weak non-Abelian Kneser-type theorem
Abstract
We prove the following result due to Hamidoune using an analytic approach. Suppose that A is a subset of a finite group G with |AA-1| ≤ (2-)|A|. Then there is a subgroup H of G and a set X of size O(1) such that A ⊂ XH.
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