TY  - JOUR
AU  - López Gómez, Julián
AU  - Muñoz Hernández, Eduardo
AU  - Zanolin, Fabio
PY  - 2021
DO  - 10.1515/ans-2021-2137
SN  - 1536-1365
UR  - https://hdl.handle.net/20.500.14352/4981
T2  - Advanced Nonlinear Studies
AB  - In this paper, we investigate the problem of the existence and multiplicity of periodic solutions to the planar Hamiltonian system x' = −λα(t)f (y), y' = λβ(t)g(x), where α, β are non-negative T-periodic coefficients and λ > 0. We focus our study to...
LA  - eng
M2  - 489
PB  - De Gruyter
KW  - Periodic Predator-Prey Model of Volterra Type
KW  - Subharmonic Coexistence States
KW  - Poincaré–Birkhoff Twist Theorem
KW  - Degenerate Versus Non Degenerate Models
KW  - Point-Wise Behaviorof the Low-Order Subharmonics as the Model Degenerates
TI  - The Poincaré–Birkhoff Theorem for a Class of Degenerate Planar Hamiltonian Systems
TY  - journal article
VL  - 21
ER  -