4th March 2020: Neck-stretching and unknottedness of Lagrangian spheres in S^2 x S^2, II

Title: Neck-stretching and unknottedness of Lagrangian spheres in S^2 x S^2, II

Abstract: 

This is a continuation of the talk given on 19th February.

The "stretching the neck'' technique is a powerful method in symplectic topology and Hamiltonian dynamics, with applications to embedding problems, to Reeb dynamics, and to the study of Lagrangian submanifolds. I'll try to explain this technique by using it to prove that every Lagrangian sphere in S^2 x S^2 is Hamiltonian isotopic to the anti-diagonal, following Richard Hind's GAFA paper from 2004.

Villa Battelle, Wednesday 4th March, 14:30

This seminar is part of the Symplectic geometry seminar, jointly with Université de Neuchâtel.