EQUIVALENCE THEOREM ON WEIGHTED SIMULTANEOUS L-APPROXIMATION BY MEANS OF SZASZ-KANTOROVICH OPERATORS AND BASKAKOV-KANTOROVICH OPERATORS

摘要

The intention of this paper is to give direct and converse results on weighted simultaneous approximationby means of Szsz-Kantorovich operators and Baskakov-Kantorovich operators in L_p-norms using theweighted Ditzian-Totik modulus of smoothness.