scholarly journals On the Behavior of Periodic Solutions of Planar Autonomous Hamiltonian Systems with Multivalued Periodic Perturbations

Author(s):  
Oleg Makarenkov ◽  
Luisa Malaguti ◽  
Paolo Nistri
Author(s):  
Christian Fabry ◽  
Alessandro Fonda

AbstractIn the first part of the paper we consider periodic perturbations of some planar Hamiltonian systems. In a general setting, we detect conditions ensuring the existence and multiplicity of periodic solutions. In the second part, the same ideas are used to deal with some more general planar differential systems.


2011 ◽  
Vol 74 (5) ◽  
pp. 1596-1606 ◽  
Author(s):  
Chun Li ◽  
Zeng-Qi Ou ◽  
Chun-Lei Tang

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