Videos

Instantaneous Hamiltonian displaceability and arbitrary squeezability for critically negligible sets

Presenter
November 15, 2024
Abstract
This talk will be about joint work with Fabian Ziltener in which we show that a compact n-rectifiable subset of R^2n with vanishing n-Hausdorff measure can be displaced from itself by a Hamiltonian diffeomorphism arbitrarily close to the identity. This has the consequence that such a set can be arbitrarily symplectically squeezed, i.e. embedded into any neighborhood of the origin in R^2n