具有正负系数的抛物中立型时滞偏微分方程解振动的充要条件  

Necessary and Sufficient Conditions for Oscillation of Parabolic Neutral Delay Partial Differential Equations with Positive and Negative Coefficients

作　　者：杨军[1] 王春艳[1] 章胤[1] 张洁[1] 

机构地区：[1]燕山大学理学院,秦皇岛066004

出　　处：《数学理论与应用》2005年第2期35-37,共3页Mathematical Theory and Applications

基　　金：河北省自然科学基金资助项目(102160)

摘　　要：本文研究了具有正负系数的抛物中立型时滞偏微分方程的振动性,获得了该方程所有解振动的充要条件,并用例子加以说明.This paper is concerned with the oscillation of par ab olic neutral delay partial differential equations with positive and negative coe fficients.Necessary and sufficient conditions are obtained for the oscillation o f all solutions of the equations,and these results are illustrated by some examples.

关 键 词：正负系数 中立型 微分方程解 充要条件 时滞 抛物 偏微分方程 振动性 

分 类 号：O175.26[理学—数学]