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We prove a monotonicity property of the Hurwitz zeta function which, in turn, translates into a chain of inequalities for polygamma functions of different orders. We provide a probabilistic interpretation of our result by exploiting a…

Statistics Theory · Mathematics 2020-03-25 Julyan Arbel , Olivier Marchal , Bernardo Nipoti

In this note, we present monotonicity results of a function involving to the inverse hyperbolic sine. From these, we derive some inequalities for bounding the inverse hyperbolic sine.

Classical Analysis and ODEs · Mathematics 2014-05-08 Feng Qi , Bai-Ni Guo

In this paper, we give a new generalization of the Bohr inequality in refined form both for bounded analytic functions, and for sense-preserving harmonic functions with analytic part being bounded.

Complex Variables · Mathematics 2021-04-15 Saminathan Ponnusamy , Ramakrishnan Vijayakumar

This article studies the monotonicity, log-convexity of the modified Lommel functions by using its power series and infinite product representation. Same properties for the ratio of the modified Lommel functions with the Lommel function,…

Classical Analysis and ODEs · Mathematics 2017-04-18 Saiful R Mondal

In the paper, by establishing the monotonicity of some functions involving the sine and cosine functions, the authors provide concise proofs of some known inequalities and find some new sharp inequalities involving the Seiffert,…

Classical Analysis and ODEs · Mathematics 2013-01-29 Wei-Dong Jiang , Feng Qi

In this paper, we establish some new integral inequalities for for m- and (alpha,m)-logarithmically convex functions.

Classical Analysis and ODEs · Mathematics 2012-11-29 Mevlut Tunc

The monotonicity properties of remainder of Stirling's formula for the gamma function are simply obtained by using the integral transforms with series.

Number Theory · Mathematics 2023-07-18 Yuling Xue , Songbai Guo

We mainly establish a monotonicity property between some special Riemann sums of a convex function $f$ on $[a,b]$, which in particular yields that $\frac{b-a}{n+1}\sum_{i=0}^n f\left(a+i\frac{b-a}{n}\right)$ is decreasing while…

Classical Analysis and ODEs · Mathematics 2014-10-07 Jamal Rooin , Hossein Dehghan

In this work, we investigate a problem posed by Feng Qi and Bai-Ni Guo in their paper Complete monotonicities of functions involving the gamma and digamma functions.

Probability · Mathematics 2018-04-27 Mohamed Bouali

We shall give a refinement of the arithmetic-geometric mean inequality.

Classical Analysis and ODEs · Mathematics 2010-08-23 Shigeru Furuichi

In the paper, the authors establish some asymptotic formulas and double inequalities for the factorial $n!$ and the gamma function $\Gamma$ in terms of the tri-gamma function $\psi'$.

Classical Analysis and ODEs · Mathematics 2015-06-02 Cristinel Mortici , Feng Qi

This paper investigates the generalized beta-logarithmic matrix function (GBLMF),which combines the extended beta matrix function and the logarithmic mean. The study establishes essential properties of this function, including functional…

Functional Analysis · Mathematics 2025-02-24 Nabiullah Khan , Rakibul Sk , Mehbub Hassan

In this paper our aim is to present the completely monotonicity and convexity properties for the Wright function. As consequences of these results, we present some functional inequalities. Moreover, we derive the monotonicity and…

Classical Analysis and ODEs · Mathematics 2017-08-03 Khaled Mehrez

In this paper, by using a general result on the monotonicity of quotients of power series, our aim is to prove some monotonicity and convexity results for the modified Struve functions. Moreover, as consequences of the above mentioned…

Classical Analysis and ODEs · Mathematics 2014-10-15 Árpád Baricz , Tibor K. Pogány

An inequality concerning ratios of gamma functions is proved. This answers a question of Guo and Qi (2003).

Classical Analysis and ODEs · Mathematics 2009-09-22 Yaming Yu

We establish sharp inequalities involving the incomplete Beta and Gamma functions. These inequalities arise in the approximation of generalized Bernstein functions by higher order Thorin-Bernstein functions. Furthermore, new properties of a…

Classical Analysis and ODEs · Mathematics 2024-09-05 Stamatis Koumandos , Henrik Laurberg Pedersen

In this paper we prove some monotonicity, log--convexity and log--concavity properties for the Volterra and incomplete Volterra functions. Moreover, as consequences of these results, we present some functional inequalities (like Tur\'an…

Classical Analysis and ODEs · Mathematics 2018-11-20 Khaled Mehrez , Sergei M. Sitnik

We consider two operations on the Mittag-Leffler function which cancel the exponential term in the expansion at infinity, and generate a completely monotonic function. The first one is the action of a certain differential-difference…

Classical Analysis and ODEs · Mathematics 2013-12-18 Thomas Simon

The purpose of this paper is to introduce the logarithmic mean of two convex functionals that extends the logarithmic mean of two positive operators. Some inequalities involving this functional mean are discussed as well. The operator…

Functional Analysis · Mathematics 2020-10-07 Mustapha Raïssouli , Shigeru Furuichi

We state some sufficient or equivalent conditions to GRH of general L-functions in terms of monotonicity of certain weighted summatory functions.

Number Theory · Mathematics 2012-04-10 Masatoshi Suzuki