Bifurcations of limit cycles in equivariant quintic planar vector fields
By means of the Poincaré-Pontryagin and Poincaré-Bendixson theorems, the author obtains 23 limit cycles for a \(Z_3\)-equivariant near-Hamiltonian system of degree 5 which is a perturbation of a \(Z_6\)-equivariant quintic Hamiltonian system.
scientific article; zbMATH DE number 6351996
scientific article