L_p (D) Complex approximation Using A Modified Szasz- Durrmeyer Operator

Abstract

Many papers about the approximation of analytic functions on a compact unit disk using Szasz- Durrmeyer operator was introduced. These papers are restricted to analytic functions. Here we generalize szasz operator Using the definition  to get a best results for function in quasi normed spaces, like, upper bound theorem and voronovskaja type result.