Poincaré bifurcation of an integrable system with double center perturbed by cubic homogeneous polynomial. (Chinese. English summary) Zbl 1221.37110
MSC:
| 37J20 | Bifurcation problems for finite-dimensional Hamiltonian and Lagrangian systems |
| 37J30 | Obstructions to integrability for finite-dimensional Hamiltonian and Lagrangian systems (nonintegrability criteria) |
