摘要
介绍了两个自变量的二阶偏微分方程分类,然后给出了多个自变量的变系数偏微分方程的分类.
The author firstly introduce the classification of second-order partial differential equations involving two variables, and then follows the classification of coeflicient-changed partial defferential equations involving multiple variables.
出处
《喀什师范学院学报》
2006年第3期6-7,共2页
Journal of Kashgar Teachers College
关键词
二阶变系数偏微分方程
特征方程
特征曲线
标准形式
微分算子
Second-order coefficient-changed partial differential equations
Characteristic equations
Characteristic curves
Standard form
Differential operator
