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Voronovskaya type results for Bernstein-Chlodovsky operators preserving e−2
Journal of Mathematical Analysis and Applications ( IF 1.3 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.jmaa.2020.124307
Tuncer Acar , Mirella Cappelletti Montano , Pedro Garrancho , Vita Leonessa

Abstract In this paper we continue the study of certain Bernstein-Chlodovsky operators B n ⁎ preserving the exponential function e − 2 x ( x ≥ 0 ) , recently introduced in [4] . In particular, we prove some Voronovskaya type theorems and we deduce some properties of the B n ⁎ 's, such as saturation results. We also compare this new class of operators with the classical Bernstein-Chlodovsky ones, proving that the operators B n ⁎ provide better approximation results for certain functions.

中文翻译:

保留 e−2 的 Bernstein-Chlodovsky 算子的 Voronovskaya 类型结果

摘要 在本文中,我们继续研究某些 Bernstein-Chlodovsky 算子 B n ⁎ 保留最近在 [4] 中引入的指数函数 e − 2 x ( x ≥ 0 ) 。特别是,我们证明了一些 Voronovskaya 类型的定理,并推导出了 B n ⁎ 的一些性质,例如饱和度结果。我们还将这类新的算子与经典的 Bernstein-Chlodovsky 算子进行了比较,证明算子 B n ⁎ 为某些函数提供了更好的近似结果。
更新日期:2020-11-01
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