Exposé Bourbaki 1077 : Groupes approximatifs
Exposé Bourbaki 1077 : Approximate Groups
Astérisque | Exposés Bourbaki | 2015
Anglais
Given a group $G$, a symmetric subset $X$ containing the identity is said to be a $K$-approximate group if $XX$ can be covered by at most $K$ translates $gX$. Here $K$ is a positive integer. The main result describes a finite $K$-approximate group as being essentially finite-by-nilpotent.
Approximate groups.
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