Some properties of Baskakov-Schurer-Szász operators via power summability methods.

In this paper we will prove the Korovkin type theorem for Baskakov-Schurer-Szász operators via the A-statistical convergence and the power summability method. Also we give the rate of the convergence related to the above summability methods and in the last chapter we give a kind of Voronovskaya type theorem for the A-statistical convergence and Grüss-Voronovskaya type theorem. [ABSTRACT FROM AUTHOR]