常微分方程  

出　　处：《中国学术期刊文摘》2008年第3期21-22,共2页Chinese Science Abstracts(Chinese Edition)

摘　　要：分数阶奇异微分方程初值问题正解的存在性；电报方程双周期解的极大值原理与强正性估计及应用；常微分方程（组）的高次积分因子与高次积分及其微分特征列集算法.Existence of positive solution for a singular initial value problem for fractional differential equation ;Maximum principles and strongly positive estimates for doubly periodic solutions of telegraph equations and their applications; Higher order integral factors and integrals of ordinary differential equation（s） and their determination by characteristic set method .

关 键 词：常微分方程 正解的存在性 奇异微分方程 积分因子 极大值原理 初值问题 双周期解 电报方程 

分 类 号：O175.1[理学—数学] O175.2[理学—基础数学]