Author/Authors :
Asgari، Mohammad Sadegh نويسنده Department of Mathematics, Faculty of Science, Islamic Azad University, Central Tehran Branch , , Badehian، Ziad نويسنده Department of Mathematics, Faculty of Science, Islamic Azad University, Central Tehran Branch ,
Abstract :
In this paper, we introduce $\alpha$-$\psi$-contractive mapping in partially ordered sets and construct fixed point theorems to solve a first-order ordinary differential equation by existence of its lower solution.
