Stability theorems of perturbed linear systems with impulse effect.
Comparison results for impulsive delay differential inequalities and equations.
Strong oscillations for second order nonlinear functional differential equations.
Oscillation results for difference equations with delays
Existence theorem of periodic positive solutions for the Rayleigh equation of retarded type.
Global existence and asymptotic behavior of solution of second-order nonlinear impulsive differential equations.
Existence of periodic solution for first order nonlinear neutral delay equations.
Comparison and oscillation results for delay difference equations with oscillating coefficients.
Resonance and nonresonance periodic value problems of first-order differential systems.
Conditions for oscillation of a neutral differential equation.
On existence of periodic solutions of the Rayleigh equation of retarded type.
Nonautonomous differential equations of alternately retarded and advanced type.
Oscillation of first order neutral diferential equations with positive and negative coefficients.
Necessary and sufficient conditions for oscillations of delay partial difference equations.
In this paper we study two classes of delay partial difference equations with constant coefficients. Explicit necessary and sufficient conditions for the oscillation of the solutions of these equations are obtained.
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