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In this paper we give direct, inverse, and equivalence approximation theorems with unified Ditzian–Totik modulus (0 ≤ λ ≤ 1) for Meyer–König and Zeller operators.
Supported by NSF of China(10571040), NSF of Hebei Province (A2004000137), NSF of Hebei Province (08M001) and Doctorial Fund of Education Department of Hebei Province (B2004118).
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