Le groupe des difféomorphismes analytiques réels d’une variété analytique réelle est un groupe riche. Il est dense dans le groupe des difféomorphismes lisses. Herman a montré que, pour le tore de dimension , sa composante connexe de l’identité est un groupe simple. Pour les variétés fibrées, pour les variétés admettant une action semi-libre spéciale de , et pour les variétés de dimension ou admettant une action non-triviale de , on montre que la composante de l’identité du groupe des difféomorphismes analytiques réels est un groupe parfait.
The group of real analytic diffeomorphisms of a real analytic manifold is a rich group. It is dense in the group of smooth diffeomorphisms. Herman showed that for the -dimensional torus, its identity component is a simple group. For fibered manifolds, for manifolds admitting special semi-free actions and for 2- or 3-dimensional manifolds with nontrivial actions, we show that the identity component of the group of real analytic diffeomorphisms is a perfect group.
@article{ASENS_2009_4_42_4_601_0, author = {Tsuboi, Takashi}, title = {On the group of real analytic diffeomorphisms}, journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure}, volume = {42}, year = {2009}, pages = {601-651}, doi = {10.24033/asens.2104}, zbl = {1181.58009}, language = {en}, url = {http://dml.mathdoc.fr/item/ASENS_2009_4_42_4_601_0} }
Tsuboi, Takashi. On the group of real analytic diffeomorphisms. Annales scientifiques de l'École Normale Supérieure, Tome 42 (2009) pp. 601-651. doi : 10.24033/asens.2104. http://gdmltest.u-ga.fr/item/ASENS_2009_4_42_4_601_0/
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