Rigidity of coisotropic submanifolds and their characteristic foliations.

The Gromov-Eliashberg theorem states that a diffeomorphism which can be written as a C^0 limit of symplectomorphisms is itself a symplectomorphism.  In this talk, I will show that coisotropic submanifolds and their characteristic foliations exhibit similar rigidity properties.  This is joint work with Vincent Humiliere and Remi Leclercq.