Stability of the ordinary differential equations and some applications

In this thesis consists of five chapters. In the first an introduction then define differential equation, such as types of differential equation, then explained the system of ordinary differential equations, described on non-linear differential equations and Lyapunov's theory of stability. Then, application are given as well. Also about application in biology and SEIR model, the basics of SEIR model explained. Some fundamental conclusions about thesis are given.