On Some Positive Linear Operators Preserving the B^{-1}-Convexity of Functions

Year 2024, Volume: 5 Issue: 2, 134 - 142, 31.07.2024

Mustafa Uzun , Tuncay Tunç

https://doi.org/10.54974/fcmathsci.1393349

Abstract

In the study, we first give an inequality that non-negative differentiable functions must satisfy to be B^{-1}-convex. Then, using the inequality, we show that the B^{-1}-convexity property of functions is preserved by Bernstein-Stancu operators, Sz'asz-Mirakjan operators and Baskakov operators. In addition, we compare the concepts B^{-1}-convexity and B-concavity of functions.

Keywords

B−1 -convexity , Bernstein-Stancu operators , Sz´asz-Mirakjan operators , Baskakov operators , Shape preserving approximation.

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