共查询到19条相似文献,搜索用时 78 毫秒
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二阶非线性泛函微分方程解的振动性质 总被引:1,自引:0,他引:1
研究了一类二阶非线性泛函微分方程解的振动性以及非振动解的有界性.在一定条件下,建立了几个新的振动性和有界性定理,其结果推广和改进了已有的一些结果. 相似文献
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在α>1,且0<β<α情性下研究了高阶具非线性中立项不稳定型时滞微分方程[x(t)-pxα(t-τ)](n)=q(t)xβ(t-σ),(t≥t0)的振动和非振动性.利用一些新的技巧,获得了上述方程有界解振动的振动准则和至少存在一个非振动解的非振动准则,所得结果补充和推广了已有文献部分结果. 相似文献
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《数学的实践与认识》2020,(17)
研究了一类二阶非线性时滞微分方程的振动性.利用广义Riccati变换,积分平均技巧和不等式,建立此微分方程若干新的振动准则,所得结果推广且改进了最近一些文献中的某些振动结果. 相似文献
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研究了一类强迫高阶非线性中立型时滞微分方程一切解振动的充分条件,建立了两个振动定理,推广和改进了已有结果. 相似文献
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研究了一类二阶非线性摄动微分方程解的振动性,建立了两个新的振动性定理,推广和改进了已有的结果. 相似文献
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Some Kamenev-type oscillation criteria are obtained for a second order quasilinear damped differential equation with impulses. These criteria generalize and improve some well-known results for second order differential equations with /and without impulses. In addition, new oscillation criteria are also obtained to generalize and improve known results. Two examples of applications are given to illustrate the theory. 相似文献
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研究一类带次线性中立项的二阶非线性广义Emden-Fowler时滞微分方程的振动性.利用Riccati变换和不等式技巧,在非正则条件下建立了该类方程多个简便的Philos型和Kamenev型新振动准则.所得定理也适应于包括经典Euler方程等线性非中立型方程,推广和改进了已有文献中的相应结果.最后还给出应用实例展示了所... 相似文献
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This paper is devoted to the study of the oscillatory behavior of solutions of nonlinear hyperbolic equations with functional arguments by using integral averaging method and a generalized Riccati technique. First, we establish oscillation results for nonlinear hyperbolic equations by applying oscillation criteria for Riccati inequality. Secondly, we present interval oscillation results for nonlinear hyperbolic equations. These results improve and extend oscillation results of Cui and Xu [1]. 相似文献
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研究了一类二阶非线性中立型微分方程的振动性,得到了一些新的振动准则,推广、改进和统一了文献中的一些结果. 相似文献
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《Nonlinear Analysis: Theory, Methods & Applications》2005,60(3):485-489
In the paper a variational technique is used to show how to derive new oscillation criteria for the half-linear partial differential equation via the oscillation criteria for the ordinary half-linear differential equation. In contrast to the results usually found in the literature, general types of unbounded domains can be considered. 相似文献
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Zheng Zhaowen 《Annals of Differential Equations》2005,21(1):93-98
Using generalized Riccati transformation, some new oscillation criteria for damped linear differential equations are established. These results improve and generalize some known oscillation criteria due to A.Wintner, I.V.Kamenev for the undamped linear differential equations, and Sobol, J.S.W.Wong for the damped linear differential equations. 相似文献