摘要
针对垂直相加法无法讨论泛函偏微分方程组的强迫振动性的不足,直接利用振动的定义、Green公式以及齐次Neumann边界条件把中立型抛物微分方程组的振动问题转化为泛函微分不等式不存在最终正解的问题,然后利用最终正解的定义及上下极限得到了在齐次Neumann边界条件下判别其所有解振动或全振动的充分条件.
Aim at the shortage of vertically additive method by which we can＇t discuss forced oscilla tions of systems of partial functional differential equations, we directly use the oscillatory definition, Green＇s formula and boundary condition of homogeneous Neumann to change the oscillatory problem of solutions to a class of systems of quasilinear parabolic equations of neutral type into the problem of which functional differential inequality haven＇t eventually positive solution. And we use the definition of eventually positive solution, limit superior and limit inferior to obtain sufficient conditions for oscillation or full oscillation of their solutions subject to boundary condition of homogeneous Neumann type.
出处
《武汉大学学报（理学版）》
CAS
CSCD
北大核心
2005年第5期537-541,共5页
Journal of Wuhan University:Natural Science Edition
关键词
中立型
拟线性
抛物微分方程
方程组
振动
neutral type
quasilinear
parabolic differential equation
systems
oscillation
