Symplectic Camel theorems and ${\mathcal C}^0$-rigidity of coisotropic submanifolds

Abstract

This paper deals with the ${\mathcal C}^0$-rigidity of the reduction of coiostropic submanifolds under the action of symplectic homeomorphism. More precisely, we exhibit several situations where a symplectic homeomorphism that takes a coisotropic submanifold to a smooth submanifold (which are then known to be coisotropic by a result of Humili\`ere-Leclercq-Seyfaddini) abides to the non-squeezing property in the reduction.