@Article{, title={Using Banach Fixed Point Theorem To Study The Stability Of First-Order Delay Differential Equations}, author={Zaid A. A. Mahdi Monje and Buthainah A. A. Ahmed}, journal={Al-Nahrain Journal of Science مجلة النهرين للعلوم}, volume={23}, number={1}, pages={69-72}, year={2020}, abstract={In this paper we use the Banach fixed point theorem investigate the stability and asymptotic1 stability of the zero solution for the first order retarded delay differential equation=-∑_ j= ^N▒〖 b_j (t ,〖 3y〗 _t )3y(t)+f(t ,〖 3y〗 _t)〗 where the delay is constant. Also we give new conditions to ensure the stability and asymptotic stability of the zero solution of this equation.

} }