Abstract
In this paper, we prove the existence of a periodic smooth finite-dimensional center manifold near a nonhyperbolic cycle in classical delay differential equations by using the Lyapunov–Perron method. The results are based on the rigorous functional analytic perturbation framework for dual semigroups (sun–star calculus). The generality of the dual perturbation framework ensures that the results extend to a much broader class of evolution equations.
| Original language | English |
|---|---|
| Pages (from-to) | 815–858 |
| Number of pages | 44 |
| Journal | Journal of Dynamics and Differential Equations |
| Volume | 37 |
| Issue number | 1 |
| Early online date | 7 Aug 2023 |
| DOIs | |
| Publication status | Published - 2025 |
Bibliographical note
Publisher Copyright:© 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
Keywords
- Center manifold theorem
- Delay differential equations
- Dual perturbation theory
- Nonhyperbolic cycles
- Sun–star calculus