A note on the paper “Voronovskaya type asymptotic approximation by modified Gamma operators”

In the present paper we studied the Voronovskaya type theorem for modified Gamma operators presented by A. Ä°zgi in the paper “Voronovskaya type asymptotic approximation by modified Gamma operators” [Applied Mathematics and Computation 217 (2011) 8061-8067]. We show that this theorem is not true. We present a correct form of this theorem and its proof. Furthermore, we obtain an error estimate for modified Gamma operators.