共查询到20条相似文献,搜索用时 62 毫秒
1.
2.
讨论一类多滞量抛物型时滞偏微分方程解的振动性质,获得了其一切解振动的充要条件及一些充分条件;指出了其与普通抛物型偏微分方程解的质的差异. 相似文献
3.
4.
非线性抛物型时滞微分方程解振动的充要条件 总被引:14,自引:0,他引:14
讨论了一类多滞量非线性抛物型时滞微分方程解的振动性质,获得了其一切解振动的充要条件;指出了其与普通抛物型偏微分方程解的质的差异。 相似文献
5.
时滞抛物方程解振动的充要条件 总被引:1,自引:0,他引:1
In this paper, necessary and sufficient conditions for oscillation of solu-tions of delay parabolic equations are obtained. 相似文献
6.
研究一类脉冲时滞抛物型偏微分方程组解的振动性,利用一阶脉冲时滞微分不等式获得了该类方程组在两类不同边值条件下所有解振动的若干充分条件.所得结果充分反映了脉冲和时滞在振动中的影响作用. 相似文献
7.
时滞抛物方程组振动的充要条件 总被引:2,自引:0,他引:2
本文研究了一类时滞抛物微分方程组在齐次Neumann边界条件下解的振动性,用平均值技巧和Green公式把时滞抛物方程组的振动问题转化为泛函微分方程组的振动问题,获得了判别其所有解振动的一个易于验证的充要条件,并举出实例对主要结果进行阐明. 相似文献
8.
脉冲时滞抛物型方程解的振动性 总被引:31,自引:0,他引:31
本文研究了两类边界条件下有振动系数的脉冲时滞抛物型方程解的振动性,得到了若干解振动的判别准则。其结果即使用于有固定符号系数的方程,也显著地改进了已有的结果。 相似文献
9.
10.
11.
OSCILLATION OF SYSTEMS OF IMPULSIVE DELAY PARABOLIC EQUATIONS ABOUT BOUNDARY VALUE PROBLEMS 总被引:1,自引:0,他引:1
Luo Lipng Peng Baiyu Yang Liu 《Annals of Differential Equations》2007,23(4):470-476
In this paper,oscillation of solutions to a class of impulsive delay para- bolic partial differential equations system with higher order Laplace operator is studied.Under two different boundary value conditions,we establish some sufficient criteria with respect to the oscillations of such systems,employing first-order impulsive delay differential inequalities.The results fully reflect the influence action of impulsive and delay in oscillation. 相似文献
12.
In this paper, we study a second order integral boundary value problem with delay. By the Krasnoselskii fixed point theorem, we obtain sufficient conditions for the existence of at least one or two positive solutions to the problem. 相似文献
13.
THE FIRST BOUNDARY VALUE PROBLEM FOR STRONGLY DEGENERATE QUASILINEAR PARABOLIC EQUATIONS IN ANISOTROPIC SOBOLEV SPACES 总被引:1,自引:0,他引:1
This article concerns the existence of weak solutions of the first boundary value problem for a kind of strongly degenerate quasilinear parabolic equation in the anisotropic Sobolev Space. With the theory of anisotropic Sobolev spaces an existence result is proved. 相似文献
14.
15.
16.
17.
18.
19.
By cone theory and the fixed point index,we study the existence of positive solutions to a three-order boundary value problem with dependence on the first order derivative. 相似文献
20.