Estimation of Derivatives for Bounded Regular Vanishing Functions

GUO Yi-bing, WANG Ping-an

doi:10.13371/j.cnki.chin.q.j.m.2018.03.005

Chinese Quarterly Journal of Mathematics >

2018 , Vol. 33 >Issue 3: 272 - 277

DOI: https://doi.org/10.13371/j.cnki.chin.q.j.m.2018.03.005

Estimation of Derivatives for Bounded Regular Vanishing Functions

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College of Sciences, Xijing University

GUO Yi-bing(1983{), female, native of Xian, Shaanxi, a lecturer of Xijing University, M.S.,engages in geometric function theory.

Accepted date: 2015-11-25

Online published: 2020-10-08

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Abstract

In this paper, we mainly discuss the problem of estimating the n-th derivative for bounded regular vanishing functions. The estimation of the n-th derivative for the function is deduced by the 1-th and 2-th derivative.

Key words： Vanishing function; bounded regular functions; estimation; derivative

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GUO Yi-bing, WANG Ping-an . Estimation of Derivatives for Bounded Regular Vanishing Functions[J]. Chinese Quarterly Journal of Mathematics, 2018 , 33(3) : 272 -277 . DOI: 10.13371/j.cnki.chin.q.j.m.2018.03.005

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