TITLE

# Pointwise Approximation Theorems for Combinations and Derivatives of Bernstein Polynomials

AUTHOR(S)
Lin Sen Xie
PUB. DATE
October 2005
SOURCE
Acta Mathematica Sinica;Oct2005, Vol. 21 Issue 5, p1241
SOURCE TYPE
DOC. TYPE
Article
ABSTRACT
We establish the pointwise approximation theorems for the combinations of Bernstein polynomials by the rth Ditzianâ€“Totik modulus of smoothness $$\omega ^{r}_{\Phi } (f,t)$$where Î¦ is an admissible stepâ€“weight function. An equivalence relation between the derivatives of these polynomials and the smoothness of functions is also obtained.
ACCESSION #
18597429

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