The lower estimate for linear positive operators, I

On multivariate approximation by Bernstein-type polynomials

Marie-Madeleine Derriennic · Journal of Approximation Theory · 1985 · 93 citations

Computing, Computer Science, Mathematics +7

The Lower Estimate for Linear Positive Operators (II)

Hans-Bernd Knoop, Xinlong Zhou · Results in Mathematics · 1994 · 59 citations

Natural Sciences, Pharmaceutical Analysis, Derivatives +8

A global inverse theorem on simultaneous approximation by Bernstein-Durrmeyer operators

Heinz H. Gonska, Xinlong Zhou · Journal of Approximation Theory · 1991 · 32 citations

Natural Sciences, Computer Science, Mathematics +14

Strong Converse Inequality for the Bernstein-Durrmeyer Operator

W. Chen, Z. Ditzian, Kamen G. Ivanov · Journal of Approximation Theory · 1993 · 24 citations

Natural Sciences, Electrical Engineering, Probability Theory +8

Kantorovich-Bernstein polynomials

Z. Ditzian, Xinlong Zhou · Constructive Approximation · 1990 · 21 citations