Oscillation of Nonlinear Impulsive Delay Hyperbolic Partial Differential Equations

In this paper,by making use of the calculous technique and some results of the impulsive differential inequality,oscillatory properties of the solutions of certain nonlinear impulsive delay hyperbolic partial differential equations with nonlinear diffusion coefficient are investigated.Sufficient conditions for oscillations of such equations are obtained.

Oscillation of Second Order Delay Differential Equations with Nonlinear Neutral Term

By using the averaging technique, we obtain new oscillation criteria for second order delay differential equation with nonlinear neutral term. These results generalize and improve some known results about neutral delay differential equation of second order.

OSCILLATION OF NONLINEAR IMPULSIVE PARABOLIC DIFFERENTIAL EQUATIONS WITH SEVERAL DELAYS

In this paper, oscillatory properties for solutions of certain nonlinear impulsive parabolic equations with several delays are investigated and a series of new sufficient conditions for oscillations of the equation are established.

OSCILLATION THEOREM TO SYSTEMS OF IMPULSIVE NEUTRAL DELAY PARABOLIC PARTIAL DIFFERENTIAL EQUATIONS

In this paper, we study the oscillation of solutions to the systems of impulsive neutral delay parabolic partial differential equations. Under two different boundary conditions, we obtain some sufficient conditions for oscillation of all solutions to the systems.

OSCILLATION OF IMPULSIVE HYPERBOLIC PARTIAL DIFFERENTIAL EQUATION WITH DELAY

In this paper, oscillation properties of the solutions of impulsive hyperbolic equation with delay are investigated via the method of differential inequalities. Sufficient conditions for oscillations of the solutions are established.

OSCILLATION FOR A CLASS OF SECOND ORDER DELAY DIFFERENTIAL EQUATIONS WITH NONLINEAR NEUTRAL TERM

By the averaging technique,we establish some oscillation theorems for a class of second order delay differential equations with nonlinear neutral term,the results obtained extend some known results in the previous literatures.

OSCILLATION OF A NONLINEAR DELAY DIFFERENTIAL EQUATION WITH NONLINEAR NEUTRAL TERM

This paper is concerned with the following nonlinear delay differential equation with nonlinear neutral term[h(t)(y(t) +φ(t,y(τ(t)))']' + q(t)f(y(g(t))) = 0. An oscillation criterion for the above equation is obtained.

GENERIC OSCILLATIONS OF FIRST ORDER IMPULSIVE DELAY DIFFERENTIAL EQUATIONS

In this paper, we will study generic oscillation and generic nonoscillation of first order impulsive delay differential equations. A necessary and sufficient condition and some sufficient conditions are obtained for both phenomena based on the root of characteristic equation.

带脉冲的多时滞分数阶阻尼偏微分方程解的强迫振动性

利用微分不等式方法,在Robin和Dirichlet边界条件下,建立了带阻尼项的脉冲多时滞分数阶偏微分方程解的强迫振动性的一些充分条件,并举出一个实例验证了主要结果的有效性.

OSCILLATION AND ASYMPTOTIC BEHAVIOR OF SOLUTIONS OF DELAY DIFFERENTIAL EQUATIONS WITH IMPULSES

Sufficient conditions are obtained respectively for tending to zero of the nonoscillatory solutions of equation with impulses and for tending to infinite of every nonoscillatory solution. Conditions are also obtained for all solutions to be oscillatory when the equation is of oscillating coefficients.

OSCILLATION OF SYSTEMS OF IMPULSIVE DELAY PARABOLIC EQUATIONS ABOUT BOUNDARY VALUE PROBLEMS

In this paper, oscillation of solutions to a class of impulsive delay parabolic 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.

OSCILLATION OF THIRD ORDER DELAY DIFFERENTIAL EQUATIONS WITH IMPULSES

In this paper we study the oscillation and asymptotic behavior of third order delay differential equations with impulses. Some new sufficient conditions which guarantee that every solution is oscillatory or converges to zero are obtained. Three examples are also given to illustrate our main results.

OSCILLATION THEOREMS FOR SECOND ORDER FORCED NONLINEAR DIFFERENTIAL EQUATIONS WITH DELAYED ARGUMENT

By a Riccati transformation, we establish some new oscillation criteria which im-prove and generalize some known results in the previous literatures.

带强迫项的三阶脉冲时滞微分方程的振动性与渐近性

解决了一类带强迫项的三阶脉冲时滞微分方程的非振动解与其一阶、二阶导数的符号关系,得到其振动性与渐近性的判别准则,并举例说明了准则的有效性。

非线性脉冲时滞抛物型偏微分方程的强迫振动性

考虑一类具强迫项的非线性脉冲时滞抛物型偏微分方程,利用脉冲时滞微分不等式,获得了该类方程的解强迫振动的若干充分判据.

一类带强迫项的二阶脉冲时滞微分方程的振动性

给出引理解决了一类带强迫项的二阶脉冲时滞微分方程的非振动解与其导数的符号关系,得到其振动性与渐近性的判别准则,并举例说明准则的有效性。

强迫二阶非线性泛函微分方程解的振动性与渐近性

本文讨论强迫二阶非线性泛函微分方程（ａ（ｔ）ｘ＇（ｔ））＇＋ｐ（ｔ）ｆ（ｘ（ｔ），ｘ（ｑ（ｔ）））＝ｒ（ｔ）解的振动性与渐近性，所得结论改进和推广了已知的一些结果。

分数阶半线性脉冲微分方程解的振动性

研究了带阻尼项的半线性分数阶脉冲微分方程解的振动性,通过使用一个特殊的脉冲不等式和Riccati技巧,得到分数阶脉冲方程解的振动性的若干个充分条件并用一个例子验证了主要定理。所做的工作是Riccati技巧的应用在新的领域上的推广。

非线性中立型脉冲偏微分方程系统解的强迫振动性

研究了一类非线性中立型时滞脉冲偏微分方程系统解的强迫振动性,在给定的边界条件下得到了系统解强迫振动的若干判别准则,推广了已知的结果。

非线性脉冲扰动下带强迫项的次线性时滞微分方程解的渐近性

讨论了非线性脉冲扰动下带强迫项的二阶次线性时滞微分方程'''1(()())()()()()()0niiirtxtptxtqtxθtσht=++∑-+=,t≠tk,0<θ<1,1ix'(tk+)-x'(tk)=Ik(x'(tk)),x(tk+)-x(tk)=Jk(x(tk)),t=tk,k=1,2,…,t≥t0,解的渐近性。利用脉冲微分不等式和分析技巧获得了该方程所有非振动解或振动解趋于零的一系列充分性条件,所得结果推广了现有文献中的结论。