Approximation by modified $(p,q)$-gamma-type operators

The main object of this paper is to construct a new class of modified $(p,q)$ ( p , q ) -Gamma-type operators. For this new class of operators, in section one, the general moments are find; in section two, the Korovkin-type theorem and some direct results are proved by considering the modulus of continuity and modulus of smoothness and their behavior in Lipschitz-type spaces. In section three, some results in the weighted spaces are given, and in the end, some shape-preserving properties are proven.