Approximation by two dimensional Gadjiev İbragimov type operators

This thesis consist of three parts. In the first part, basic properties of linear positive operators with function spaces to be used in the thesis and some approach theorems for these spaces were included. In the second part, the basic properties of the approach with the classical Gadjiev-Ibragimov operators are given and then the approach properties of the generalization of this operator by the Gonul,Coskun (2013) were investigated. In the last part, two dimensional state of the generalization given in the second part is defined and the approximate cases of these operators are studied in detail with graphical and nımerical calculations. This section is the original part of the thesis.