Floer homology for translated points

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Margherita Sandon , Universite de Strasbourg

PLEASE NOTE: 听THIS SEMINAR WILL BE HELD AT COLUMBIA UNIVERSITY IN ROOM MATH听520. 听听A point q in a contact manifold (M,尉) is said to be a translated point of a contactomorphism 蠒, with respect to a contact form 伪 for 尉, if it is a "fixed point modulo the Reeb flow", i.e. if q and 蠒(q) are in the same Reeb orbit and 蠒 preserves 伪 at q. Translated points are key objects to look at when studying contact rigidity phenomena such as contact non-squeezing, orderability of contact manifolds and existence of bi-invariant metrics and quasimorphisms on the contactomorphism group. Based on the notion of translated points, in 2011 I proposed a contact analogue of the Arnold conjecture on fixed points of Hamiltonian symplectomorphisms. In my talk I will present a proof of this conjecture under the assumption that there are no closed contractible Reeb orbits, by means of a Floer homology theory for translated points that I am developing ad hoc to study this problem.