Invariants de certaines actions de lie instabilité du caractère Fredholm. A. El Kacimi Alaoui (1992) Manuscripta mathematica
Irreducibility of some representations of the groups of symplectomorphisms and contactomorphisms Łukasz Garncarek (2014) Colloquium Mathematicae We show the irreducibility of some unitary representations of the group of symplectomorphisms and the group of contactomorphisms.