On difference of bivariate linear positive operators

Abstract

In the present paper we give quantitative type theorems for the differences of different bivariate positive linear operators by using weighted modulus of continuity. Similar estimates are obtained via K-functional and for Chebyshev functionals. Moreover, an example involving Szasz and Szasz-Kantorovich operators is given.

Keywords

• Chebyshev functionals
• bivariate positive linear operators
• weighted modulus of continuity

References

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