Speaker
Emmanuel Opshtein
Abstract
Humilière-Leclerc-Seyffadini have proved that when a symplectic homeomorphism takes a coisotropic submanifold to a smooth object, the latter must also be co-isotropic. Moreover, the symplectic homeomorphism intertwines the characteristic foliations. The symplectic homeomorphism therefore defines a map on the reduction, whose investigation is the object of this talk. I will show several situations where the reduction map exhibit a non-squeezing property.