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arXiv · 0902.2524

Sharp inequalities for the psi function and harmonic numbers

Feng Qi·Bai-Ni Guo
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Abstract

In this paper, two sharp inequalities for bounding the psi function $\psi$ and the harmonic numbers $H_n$ are established respectively, some results in [I. Muqattash and M. Yahdi, \textit{Infinite family of approximations of the Digamma function}, Math. Comput. Modelling \textbf{43} (2006), 1329\nobreakdash--1336.] are improved, and some remarks are given.

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Feng Qi, Bai-Ni Guo. 2009-02-15. Sharp inequalities for the psi function and harmonic numbers. https://doi.org/10.1515/anly-2014-0001

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