THE GROUP OF HAMILTONIAN HOMEOMORPHISMS IN THE L-NORM

Title & Authors
THE GROUP OF HAMILTONIAN HOMEOMORPHISMS IN THE L-NORM
Muller, Stefan;

Abstract
The group Hameo (M, $\small{\omega}$) of Hamiltonian homeomorphisms of a connected symplectic manifold (M, $\small{\omega}$) was defined and studied in [7] and further in [6]. In these papers, the authors consistently used the $\small{L^{(1,{\infty})}}$-Hofer norm (and not the $\small{L^{\infty}}$-Hofer norm) on the space of Hamiltonian paths (see below for the definitions). A justification for this choice was given in [7]. In this article we study the $\small{L^{\infty}}$-case. In view of the fact that the Hofer norm on the group Ham (M, $\small{\omega}$) of Hamiltonian diffeomorphisms does not depend on the choice of the $\small{L^{(1,{\infty})}}$-norm vs. the $\small{L^{\infty}}$-norm [9], Y.-G. Oh and D. McDuff (private communications) asked whether the two notions of Hamiltonian homeomorphisms arising from the different norms coincide. We will give an affirmative answer to this question in this paper.
Keywords
Hamiltonian homeomorphism;$\small{L^{\infty}}$-Hofer norm;$\small{L^{(1,{\infty})}}$-Hofer norm;Hamiltonian topology;
Language
English
Cited by
1.
Uniform approximation of homeomorphisms by diffeomorphisms, Topology and its Applications, 2014, 178, 315
2.
Helicity of vector fields preserving a regular contact form and topologically conjugate smooth dynamical systems, Ergodic Theory and Dynamical Systems, 2013, 33, 05, 1550
3.
Exact Lagrangian submanifolds, Lagrangian spectral invariants and Aubry–Mather theory, Mathematical Proceedings of the Cambridge Philosophical Society, 2017, 1
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