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Multiple P-invariant closed characteristics on partially symmetric compact convex hypersurfaces in \({\varvec{R}}^{2n}\)

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Abstract

In this paper, let \(n\) be a positive integer and \(P=diag(-I_{n-\kappa },I_\kappa ,-I_{n-\kappa },I_\kappa )\) for some integer \(\kappa \in [0, n]\), we prove that for any compact convex hypersurface \(\Sigma \) in \(\mathbf{R}^{2n}\) with \(n\ge 2\) there exist at least two geometrically distinct P-invariant closed characteristics on \(\Sigma \), provided that \(\Sigma \) is P-symmetric, i.e., \(x\in \Sigma \) implies \(Px\in \Sigma \). This work is shown to extend and unify several earlier works on this subject.

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Acknowledgments

I would like to sincerely thank the anonymous referee for his/her careful reading of the manuscript and valuable comments. This paper contains a part of my Ph.D thesis. It is my pleasure to thank my thesis advisor, Professor Yiming Long, for his advices and helps on my study and on this paper.

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Correspondence to Hui Liu.

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Communicated by P. Rabinowitz.

Partially supported by NNSF (No. 11131004), CUSF (No. WK0010000031).

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Liu, H. Multiple P-invariant closed characteristics on partially symmetric compact convex hypersurfaces in \({\varvec{R}}^{2n}\) . Calc. Var. 49, 1121–1147 (2014). https://doi.org/10.1007/s00526-013-0614-8

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