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In the paper, by directly verifying an inequality which gives a lower bound for the first order modified Bessel function of the first kind, the authors supply a new proof for the complete monotonicity of a difference between the exponential…

经典分析与常微分方程 · 数学 2014-06-04 Feng Qi , Xiao-Jing Zhang

In the paper, the authors verify the complete monotonicity of the difference $e^{1/t}-\psi'(t)$ on $(0,\infty)$, compute the completely monotonic degree and establish integral representations of the remainder of the Laurent series expansion…

经典分析与常微分方程 · 数学 2014-06-25 Feng Qi , Shu-Hong Wang

In this note our aim is to present some monotonicity properties of the product of modified Bessel functions of first and second kind. Certain bounds for the product of modified Bessel functions of first and second kind are also obtained.…

经典分析与常微分方程 · 数学 2017-07-14 Árpád Baricz , Dragana Jankov Maširević , Saminathan Ponnusamy , Sanjeev Singh

In the paper, the authors review origins, motivations, and generalizations of a series of inequalities involving several exponential functions and sums, establish three new inequalities involving finite exponential functions and sums by…

经典分析与常微分方程 · 数学 2020-08-26 Feng Qi , Bai-Ni Guo

Simple inequalities for some integrals involving the modified Bessel functions $I_{\nu}(x)$ and $K_{\nu}(x)$ are established. We also obtain a monotonicity result for $K_{\nu}(x)$ and a new lower bound, that involves gamma functions, for…

经典分析与常微分方程 · 数学 2017-03-21 Robert E. Gaunt

In this paper we give some conditions for a class of functions related to Bessel functions to be positive definite or strictly positive definite . We present some properties and relationships involving logarithmically completely monotonic…

经典分析与常微分方程 · 数学 2012-05-08 Jamel El Kamel , Khaled Mehrez

In the paper, the author studies properties of three functions relating to the exponential function and the existence of partitions of unity, including accurate and explicit computation of their derivatives, analyticity, complete…

经典分析与常微分方程 · 数学 2023-01-04 Feng Qi

In this paper we consider a sum of modified Bessel functions of the first kind of which particular case is used in the study of Kanter's sharp modified Bessel function bound for concentrations of some sums of independent symmetric random…

经典分析与常微分方程 · 数学 2014-07-10 Árpád Baricz , Tibor K. Pogány

We deduce some new functional inequalities, like Tur\'an type inequalities, Redheffer type inequalities, and a Mittag-Leffler expansion for a special combination of modified Bessel functions of the first kind, called modified Dini…

经典分析与常微分方程 · 数学 2017-07-14 Á. Baricz , S. Ponnusamy , S. Singh

The article considers the generalized k-Bessel functions and represents it as Wright functions. Then we study the monotonicity properties of the ratio of two different orders k- Bessel functions, and the ratio of the k-Bessel and the…

经典分析与常微分方程 · 数学 2017-02-21 Saiful R Mondal , Kottakkaran S. Nisar

In the paper, the author presents a double inequality for completely monotonic degree of a remainder for an asymptotic expansion of the trigamma function. This result partially confirms one in a series of conjectures on completely monotonic…

综合数学 · 数学 2021-08-10 Feng Qi

In this note we offer some log-concavity properties of certain functions related to Bessel functions of the first kind and modified Bessel functions of the first and second kind, by solving partially a recent conjecture on the…

经典分析与常微分方程 · 数学 2015-01-28 Árpád Baricz , Andrea Laforgia , Tibor K. Pogány

In this paper our aim is to show some mean value inequalities for the modified Bessel functions of the first and second kinds. Our proofs are based on some bounds for the logarithmic derivatives of these functions, which are in fact…

经典分析与常微分方程 · 数学 2011-12-06 Árpád Baricz , Saminathan Ponnusamy , Matti Vuorinen

Simple inequalities are established for some integrals involving the modified Bessel functions of the first and second kind. In most cases these inequalities are tight in certain limits. As a consequence, we deduce a tight double…

经典分析与常微分方程 · 数学 2019-04-23 Robert E. Gaunt

In this note our aim is to deduce some new monotonicity properties for a special combination of Bessel functions of the first kind by using a recently developed Mittag-Leffler expansion for the derivative of a normalized Bessel function of…

经典分析与常微分方程 · 数学 2016-11-17 Árpád Baricz , Tibor K. Pogány , Róbert Szász

In this paper, new sharpened Huygens type inequalities involving Bessel and modified Bessel functions of the first kinds are established

经典分析与常微分方程 · 数学 2015-12-21 Khaled Mehrez

Motivated by open questions in the papers " Refinements and sharpenings of some double inequalities for bounding the gamma function" and "Complete monotonicity and monotonicity of two functions defined by two derivatives of a function…

经典分析与常微分方程 · 数学 2022-06-06 Mohamed Bouali

Some Tur\'an type inequalities for Struve functions of the first kind are deduced by using various methods developed in the case of Bessel functions of the first and second kind. New formulas, like Mittag-Leffler expansion, infinite product…

经典分析与常微分方程 · 数学 2017-07-14 Árpád Baricz , Saminathan Ponnusamy , Sanjeev Singh

In this paper our aim is to show some new inequalities of Redheffer type for Bessel and modified Bessel functions of the first kind. The key tools in our proofs are some classical results on the monotonicity of quotients of differentiable…

经典分析与常微分方程 · 数学 2017-01-31 Árpád Baricz , Khaled Mehrez

Using a deformed calculus based on the Dunkl operator, two new deformations of Bessel functions are proposed. Some properties i.e. generating function, differential-difference equation, recursive relations, Poisson formula... are also given…

泛函分析 · 数学 2013-09-23 Mohammed Brahim Zahaf , Dominique Manchon
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