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Geometry of symplectic flux and Lagrangian torus fibrations by Shelukhin, Egor; Tonkonog, Dmitry; Vianna, Renato is a scholarly article available to read on EtoBox.

What is Geometry of symplectic flux and Lagrangian torus fibrations about?

Symplectic flux measures the areas of cylinders swept in the process of a Lagrangian isotopy. We study flux via a numerical invariant of a Lagrangian submanifold that we define using its Fukaya algebra. The main geometric feature of the invariant is its concavity over isotopies with linear flux. We derive constraints on flux, Weinstein neighbourhood embeddings and holomorphic disk potentials for Gelfand-Cetlin fibres of Fano varieties in terms of their polytopes. We also describe the space of fibres of almost toric fibrations on the complex projective plane up to Hamiltonian isotopy, and provide other applications.

Author

Shelukhin, Egor; Tonkonog, Dmitry; Vianna, Renato

Published

2018

Language

EN