Examples of non-trivial contact mapping classes in all dimensions

Symplectic geometry and topology

01 October 15:30 - 16:30

Patrick Massot - École polytechnique Université Paris-Saclay

I will explain a joint work with Klaus Niederkrüger where we construct examples of contactomorphisms in every dimension that are smoothly isotopic to the identity but that are not contact isotopic to the identity. In fact, we prove the stronger statement that they are not even symplectically pseudo-isotopic to the identity. This result is based on a result of persistence of intersections for some prelagrangian submanifolds.
Tobias Ekholm,
Uppsala University
Yakov Eliashberg
Stanford University
Lenhard Ng
Duke University
Ivan Smith
University of Cambridge


Tobias Ekholm


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