Abstract
So far, it is still unknown whether all the closed characteristics on a symmetric compact star-shaped hypersurface \(\Sigma \) in \(\mathbf{R}^{2n}\) are symmetric. In order to understand behaviors of such orbits, in this paper we establish first two new resonance identities for symmetric closed characteristics on symmetric compact star-shaped hypersurface \(\Sigma \) in \(\mathbf{R}^{2n}\) when there exist only finitely many geometrically distinct symmetric closed characteristics on \(\Sigma \), which extend the identity established by Liu and Long (J Differ Equ 255:2952–2980, 2013) of 2013 for symmetric strictly convex hypersurfaces. Then as an application of these identities and the identities established by Liu et al. (J Funct Anal 166:5598–5638, 2014) for all closed characteristics on the same hypersurface, we prove that if there exist exactly two geometrically distinct closed characteristics on a symmetric compact star-shaped hypersuface in \(\mathbf{R}^4\), then both of them must be elliptic.
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Communicated by P. Rabinowitz.
Hui Liu: Partially supported by NSFC (No. 11401555), China Postdoctoral Science Foundation No. 2014T70589, CUSF (No. WK3470000001). Yiming Long: Partially supported by NSFC (No. 11131004), MCME and LPMC of MOE of China, Nankai University and BCMIIS of Capital Normal University.
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Liu, H., Long, Y. Resonance identities and stability of symmetric closed characteristics on symmetric compact star-shaped hypersurfaces. Calc. Var. 54, 3753–3787 (2015). https://doi.org/10.1007/s00526-015-0921-3
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DOI: https://doi.org/10.1007/s00526-015-0921-3
Keywords
- Compact star-shaped hypersurface
- Closed characteristic
- Hamiltonian systems
- Resonance identity
- Symmetric
- Stability