Approximate subgroups
Résumé
Given a definably amenable approximate subgroup $A$ of a (local) group in some first-order structure, there is a type-definable subgroup $H$ normalised by $A$ and contained in $A^4$ such that every definable superset of $H$ has positive measure.
Origine : Fichiers produits par l'(les) auteur(s)
Loading...