We prove two theorems of reduction of cocycles taking values in
the group of diffeomorphisms of the circle. They generalize previous results obtained by
the author concerning rigidity for smooth actions on the circle of Kazhdan groups and higher
rank lattices.
Publié le : 2006-06-14
Classification:
cocycles,
rigidity,
Kazhdan's property (T),
circle diffeomorphisms,
57S20,
37A20
@article{1148059456,
author = {Navas, Andr\'es},
title = {Reduction of cocycles and groups of diffeomorphisms of the circle},
journal = {Bull. Belg. Math. Soc. Simon Stevin},
volume = {12},
number = {5},
year = {2006},
pages = { 193-205},
language = {en},
url = {http://dml.mathdoc.fr/item/1148059456}
}
Navas, Andrés. Reduction of cocycles and groups of diffeomorphisms of the circle. Bull. Belg. Math. Soc. Simon Stevin, Tome 12 (2006) no. 5, pp. 193-205. http://gdmltest.u-ga.fr/item/1148059456/