期刊
REGULAR & CHAOTIC DYNAMICS
卷 27, 期 5, 页码 525-537出版社
PLEIADES PUBLISHING INC
DOI: 10.1134/S1560354722050021
关键词
Birkhoff billiard; integrability; conjugacy; Mather's beta-function; Marvizi-Melrose invariants
资金
- European Research Council (ERC) [106 200]
In this study, we prove that the Taylor coefficients of the normalized Mather's beta-function are invariant under C-infinity-conjugacies in a class of strictly convex smooth boundaries. Additionally, we find that any two elliptic billiard maps are C-0-conjugate near their respective boundaries, and C-infinity-conjugate near the boundary and away from a line passing through the center of the underlying ellipse. Moreover, we demonstrate that if the billiard maps corresponding to two ellipses are topologically conjugate, then the two ellipses are similar.
In the class of strictly convex smooth boundaries each of which has no strip around its boundary foliated by invariant curves, we prove that the Taylor coefficients of the normalized Mather's beta-function are invariant under C-infinity-conjugacies. In contrast, we prove that any two elliptic billiard maps are C-0-conjugate near their respective boundaries, and C-infinity-conjugate, near the boundary and away from a line passing through the center of the underlying ellipse. We also prove that, if the billiard maps corresponding to two ellipses are topologically conjugate, then the two ellipses are similar.
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