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。

youdao

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。

youdao