周期外力作用下某些二阶非线性微分方程的调和解

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Harmonic Solutions of Some Second-Order Nonlinear Equations under a Periodic Force

摘要: 本文给出了某些二阶非线性微分方程在周期外力作用下存在调和解的若干定理.这些定理推广了文[1]～[8]的有关结果.

Abstract: In this paper we prove some theorems on the existence of harmonic solutions of some second-order nonlinear equations under a periodic force. These theorems extend relevant results in refs [1]-[8].

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