Some properties of modified Szász–Mirakyan operators in polynomial spaces via the power summability method

In this paper we will prove the Korovkin type theorem for modified Szász–Mirakyan operators via 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 section, we give a kind of Voronovskaya type theorem for A -statistical convergence and Grüss–Voronovskaya type theorem.