Abstract

This paper is concerned with oscillation and nonoscillation of a kind of nonlinear neutral impulsive differential systems with constant coefficients and constant delays by using the pulsatile constant. The sufficient and necessary conditions for oscillation in the case δ ∈ R\{0} are obtained. Two examples are included using the main results.

Highlights

  • Consider a class of first-order nonlinear neutral delay differential equations of the form (1)y(t) − δ y(t − τ) + β eγy(t−σ) − 1 = 0, where γ, τ > 0, σ ≥ 0 and β are real constants

  • This paper is concerned with oscillation and nonoscillation of a kind of nonlinear neutral impulsive differential systems with constant coefficients and constant delays by using the pulsatile constant

  • The main aim of this work is to study oscillation and nonoscillation properties governing the impulse operators acting on (1) which we denote as the impulsive systems y(t) − δ y(t − τ)

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Summary

INTRODUCTION

Consider a class of first-order nonlinear neutral delay differential equations of the form (1). In the present years much effort has been devoted to study the oscillatory and asymptotic behaviour of solutions of various classes of functional differential equations of neutral type (see for e.g [16], [17]). The author have made an attempt to study the oscillation and nonoscillation properties of solutions of a class of nonlinear neutral first order impulsive differential systems of the form (E). ∆ y(τk) + δ (τk)y(τk − τ) + α(τk)G y(τk − σ ) = 0, k ∈ N and established sufficient and necessary conditions for oscillation of all solutions of (E1) for different ranges of δ (t) In this direction, we refer to the reader some of the related works [9]-[13]. A regular nontrivial solution y(t) of (E) is said to be nonoscillatory, if there exists a point t0 ≥ 0 such that y(t) has a constant sign for t ≥ t0; otherwise, the regular solution y(t) is said to be oscillatory

OSCILLATION AND NONOSCILLATION PROPERTIES
EXAMPLES
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