Abstract

In this paper we investigate the stability and asymptotic stability of the zero solution for the first order delay differential equation
 where the delay is variable and by using Banach fixed point theorem. We give new conditions to ensure the stability and asymptotic stability of the zero solution of this equation.

Highlights

  • In applied science, many practical problems concerning heat flow, species interaction microbiology, neural networks, and many more are linked with delay differential equation

  • 5] was among the first who studied the stability of delay differential equation using the fixed point theory, instead of Liapunov method

  • Many researchers studied the stability for many types of delay differential equations

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Summary

Monje and Ahmed

Iraqi Journal of Science, 2019, Vol.60, No.12, pp: 2719-2724 DOI: 10.24996/ijs.2019.60.12.22 A Study of Stability of First-Order Delay Differential Equations Using Fixed Point Theorem Banach Department of Mathematics, College of Science, University of Baghdad, Baghdad, Iraq

Introduction
For all and
Then is a complete metric space with metric
Let be given and choose
This yields
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