Journal of the
Korean Mathematical Society
JKMS

ISSN(Print) 0304-9914 ISSN(Online) 2234-3008

Article

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J. Korean Math. Soc. 2011; 48(6): 1143-1152

Printed November 1, 2011

https://doi.org/10.4134/JKMS.2011.48.6.1143

Copyright © The Korean Mathematical Society.

Existence of periodic solutions for planar Hamiltonian systems at resonance

Yong-In Kim

University of Ulsan

Abstract

The existence of periodic solutions for the planar Hamiltonian systems with positively homogeneous Hamiltonian is discussed. The asymptotic expansion of the Poincar\'e map is calculated up to higher order and some sufficient conditions for the existence of periodic solutions are given in the case when the first order term of the Poincar\'e map is identically zero.

Keywords: planar Hamilton system, resonance, periodic solution

MSC numbers: 34A12, 34A34