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JOURNALS // Sibirskii Zhurnal Vychislitel'noi Matematiki // Archive

Sib. Zh. Vychisl. Mat., 2022 Volume 25, Number 2, Pages 209–225 (Mi sjvm806)

Approximation properties by some modified Szasz-Mirakjan-Kantorovich operators

R. Yadava, R. Mehera, V. N. Mishrab

a Applied Mathematics and Humanities Department, Sardar Vallabhbhai National Institute of Technology Surat, Surat-395 007 (Gujarat), India
b Department of Mathematics, Indira Gandhi National Tribal University, Lalpur, Amarkantak-484 887, Anuppur, Madhya Pradesh, India

Abstract: The present article deals with approximation results by means of the Lipschitz maximal function, Ditzian-Totik modulus of smoothness, and Lipschitz type space having two parameters for the summation-integral type operators defined by Mishra and Yadav [22]. Further, we determine the rate of convergence in terms of the derivative of bounded variation. To estimate the quantitative results of the defined operators, we establish quantitative Voronovskaya type and Gruss type theorems. Moreover; examples are given with graphical representation to support the main results.

Key words: rate of convergence, Lipschitz function, Ditzian-Totik modulus of smoothness, function of bounded variation.

MSC: 41A25, 41A35, 41A36

Received: 04.09.2021
Revised: 18.10.2021
Accepted: 27.01.2022

DOI: 10.15372/SJNM20220208



© Steklov Math. Inst. of RAS, 2024