Author:
Song Chunmei, ,Liu Qihuai,Jiang Guirong,
Abstract
<abstract><p>In this paper, we prove the existence of harmonic solutions and infinitely many subharmonic solutions of dissipative second order sublinear differential equations named quadratic Liénard type systems. The method of the proof is based on the Poincaré-Birkhoff twist theorem.</p></abstract>
Publisher
American Institute of Mathematical Sciences (AIMS)
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