Journal
DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B
Volume 27, Issue 11, Pages 6441-6463Publisher
AMER INST MATHEMATICAL SCIENCES-AIMS
DOI: 10.3934/dcdsb.2022004
Keywords
Reversible systems; KAM iteration; small perturbation; degenerate lower dimensional tori; topological degree theorem
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Funding
- National Natural Science Foundation of China [11501234, 11871146, 117030006]
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This paper focuses on the persistence of lower-dimensional tori in reversible systems with high dimensional degenerate equilibrium under small perturbations. By applying an improved KAM iteration and Topological degree theory, we prove that the invariant torus with given frequency persists under small perturbations. Our result is a generalization of the work by X. Wang et al [On the persistence of degenerate lower-dimensional tori in reversible systems, Ergodic.
. This paper focuses on the persistence of lower-dimensional tori in reversible systems with high dimensional degenerate equilibrium under small perturbations. By an improved KAM iteration and Topological degree theory, we prove that the invariant torus with given frequency persists under small perturbations. Our result is a generalization of X. Wang et al [On the persistence of degenerate lower-dimensional tori in reversible systems, Ergodic
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