Recently some classical operator quasi-interpolants were introduced to obtain much faster convergence. We consider left Gamma quasi-interpolants and give a pointwise simultaneous approximation equivalence theorem with ω 2rϕ λ ( f ,t) ∞ by means of unified the classical modulus and Ditzian-Totick modulus.

In this paper, we give direct, inverse and equivalence approximation theorems for the Bézier type of Meyer-König and Zeller operator with unified Ditzian-Totik modulus ω ϕ λ ( f, t) (0 ≤ λ ≤ 1).

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