Use of difference equations and stability of equations in some biological modeling

In this thesis, the use of differential equations and difference equations in some biological models and their stability are examined. The study consists of four chapters. In the first part, general definitions and previous studies are mentioned. In the second chapter, basic definitions and theorems are given and supported with examples. In the third part, stability theory, stability of difference equations and stability of differential equations are given. In the fourth chapter, stability conditions of two plant species competitions based on de Wit model were determined in difference equations and in differential equations mathematical modelling was created for two species in a limited area with food competition and the stability criteria of the model for some constants were examined.