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In this paper we are studying the sequence of linear positive operators (Pₙ(Q,S)) defined in (2). Using the Bohman-Korovkin uniform convergence criterion we are proving that the sequence (Pₙ(Q,S)) converges uniformly to the identity operator. noindent In addition we give some estimates. Finally we consider two examples (Pₙ(A,S)) and (Pₙ(na,S)) defined in (25), (27).
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Emil C. Popa (2003) studied this question.
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