Recognition: unknown
Hofer's diameter and Lagrangian intersections
classification
🧮 math.DG
keywords
diameterhoferintersectionslagrangianapproachdiffeomorphismsgrouphamiltonian
read the original abstract
We prove that the group of Hamiltonian diffeomorphisms of the 2-sphere has infinite diameter with respect to Hofer's metric. Our approach is based on the theory of Lagrangian intersections.
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