THE L_p-SATURATION RESULTS WEIGHTED SIMULTANEOUS APPROXIMATION BY THE METHOD OF BERNSTEIN-DURRMEYER OPERATORS

(整期优先)网络出版时间:1998-02-12
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TheaimofthepresentpaperistoprovenewequivalenceresultsandL_p-staurationresultsonweightedsimultaneousapproximationbythemethodofBernstein-Durrmeyeroperators(includ-ingresultsin[7]).OneofthemaintoolsandcrucialestimatesmanagingtheconverseresultsisgivenbyadirectmodifiedVornorskajatheoremwhichusesthethirdorderweightedmodulusofsmoothness.