THE GROUP OF HAMILTONIAN HOMEOMORPHISMS IN THE L∞-NORM
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The group Hameo (M, ω) of Hamiltonian homeomorphisms of a connected symplectic manifold (M, ω) was defined and studied in [7] and further in [6]. In these papers, the authors consistently used the L(¹,∞)-Hofer norm (and not the L∞-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 L∞-case. In view of the fact that the Hofer norm on the group Ham(M, ω) of Hamiltonian diffeomorphisms does not depend on the choice of the L(¹,∞)-norm vs. the L∞-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.
Abstract
The group Hameo (M, ω) of Hamiltonian homeomorphisms of a connected symplectic manifold (M, ω) was defined and studied in [7] and further in [6]. In these papers, the authors consistently used the L(¹,∞)-Hofer norm (and not the L∞-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 L∞-case. In view of the fact that the Hofer norm on the group Ham(M, ω) of Hamiltonian diffeomorphisms does not depend on the choice of the L(¹,∞)-norm vs. the L∞-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.
참고문헌 (10)
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- L. Polterovich, "Symplectic displacement energy for Lagrangian submanifolds", Ergodic Theory and Dynamical Systems, 13(2), pp.357~367 (1993)
- L. Polterovich, "The Geometry of the Group of Symplectic Diffeomorphisms, Lectures in Mathematics ETH Zurich" (2001), Birkh¨auser Verlag
- C. Viterbo, "On the uniqueness of generating Hamiltonian for continuous limits of Hamiltonians flows", International Mathematics Research Notices, pp.9~ (2006)