This paper is devoted to study the existence of an infinitude of periodic solutions for a class of second order linear PDE systems without damping.

本文首先给出了一类具有无穷多个周期解的无阻尼二阶线性偏微分方程所描述的系统。

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The purpose of this paper is to study the existence of periodic solutions of a class of second order Hamiltonian Systems ith damping term.

主要研究了一类带有阻尼项的二阶哈密顿系统的周期解的存在性。

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In this paper, we prove the global existence and uniqueness of the solutions of the small initial value problems for a class of second order nonlinear hyperbolic - parabolic coupled systems.

本文证明了一类二阶非线性双曲—抛物耦合方程组小初值问题整体解的序在唯一性。

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