On montre que les produits amalgamés de groupes libres sur un sous-groupe cyclique admettent des actions moyennables, fidèles et transitives sur un ensemble dénombrable infini. Ce travail généralise le résultat concernant de telles actions pour les produits amalgamés de groupes libres sur deux générateurs.
We show that the amalgamated free products of two free groups over a cyclic subgroup admit amenable, faithful and transitive actions on infinite countable sets. This work generalizes the results on such actions for doubles of free group on two generators.
Keywords: Amenable actions, amalgamated free products, Baire’s property
Mot clés : Actions moyennables, produits amalgamés, propriété de Baire
@article{AMBP_2011__18_2_211_0, author = {Moon, Soyoung}, title = {Amenable actions of amalgamated free products of free groups over a cyclic subgroup and generic property}, journal = {Annales math\'ematiques Blaise Pascal}, pages = {211--229}, publisher = {Annales math\'ematiques Blaise Pascal}, volume = {18}, number = {2}, year = {2011}, doi = {10.5802/ambp.296}, zbl = {1246.43002}, mrnumber = {2896486}, language = {en}, url = {http://www.numdam.org/articles/10.5802/ambp.296/} }
TY - JOUR AU - Moon, Soyoung TI - Amenable actions of amalgamated free products of free groups over a cyclic subgroup and generic property JO - Annales mathématiques Blaise Pascal PY - 2011 SP - 211 EP - 229 VL - 18 IS - 2 PB - Annales mathématiques Blaise Pascal UR - http://www.numdam.org/articles/10.5802/ambp.296/ DO - 10.5802/ambp.296 LA - en ID - AMBP_2011__18_2_211_0 ER -
%0 Journal Article %A Moon, Soyoung %T Amenable actions of amalgamated free products of free groups over a cyclic subgroup and generic property %J Annales mathématiques Blaise Pascal %D 2011 %P 211-229 %V 18 %N 2 %I Annales mathématiques Blaise Pascal %U http://www.numdam.org/articles/10.5802/ambp.296/ %R 10.5802/ambp.296 %G en %F AMBP_2011__18_2_211_0
Moon, Soyoung. Amenable actions of amalgamated free products of free groups over a cyclic subgroup and generic property. Annales mathématiques Blaise Pascal, Tome 18 (2011) no. 2, pp. 211-229. doi : 10.5802/ambp.296. http://www.numdam.org/articles/10.5802/ambp.296/
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