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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 prove some monotonicity and convexity results for the modified Struve function of the second kind by using its integral representation. Moreover, as consequences of these results, we present some functional…

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

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,…

经典分析与常微分方程 · 数学 2017-04-18 Saiful R Mondal

In this paper, we obtain inequalities for some integrals involving the modified Lommel function of the first kind $t_{\mu,\nu}(x)$. In most cases, these inequalities are tight in certain limits. We also deduce a tight double inequality,…

经典分析与常微分方程 · 数学 2019-12-09 Robert E. Gaunt

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…

经典分析与常微分方程 · 数学 2014-10-15 Árpád Baricz , Tibor K. Pogány

In this paper certain Tur\'an type inequalities for some Lommel functions of the first kind are deduced. The key tools in our proofs are the infinite product representation for these Lommel functions of the first kind, a classical result of…

经典分析与常微分方程 · 数学 2017-07-14 Árpád Baricz , Stamatis Koumandos

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

The modified Lommel function $t_{\mu,\nu}(x)$ is an important special function, but to date there has been little progress on the problem of obtaining functional inequalities for $t_{\mu,\nu}(x)$. In this paper, we advance the literature…

经典分析与常微分方程 · 数学 2020-01-30 Robert E. Gaunt

Simple inequalities for some integrals involving the modified Struve function of the first kind $\mathbf{L}_{\nu}(x)$ are established. In most cases, these inequalities have best possible constant. We also deduce a tight double inequality,…

经典分析与常微分方程 · 数学 2018-07-13 Robert E. Gaunt

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

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…

经典分析与常微分方程 · 数学 2018-11-20 Khaled Mehrez , Sergei M. Sitnik

In this paper, we present some double inequalities involving certain ratios of the Gamma function. These results are further generalizations of several previous results. The approach is based on the monotonicity properties of some functions…

经典分析与常微分方程 · 数学 2015-06-25 Kwara Nantomah

We obtain a simple two-sided inequality for the ratio $\mathbf{L}_\nu(x)/\mathbf{L}_{\nu-1}(x)$ in terms of the ratio $I_\nu(x)/I_{\nu-1}(x)$, where $\mathbf{L}_\nu(x)$ is the modified Struve function of the first kind and $I_\nu(x)$ is the…

经典分析与常微分方程 · 数学 2018-08-31 Robert E. Gaunt

In this paper some Tur\'an type inequalities for classical and generalized Mittag-Leffler functions are considered. The method is based on proving monotonicity for special ratio of sections for series of Mittag-Leffler functions. Some…

经典分析与常微分方程 · 数学 2018-11-20 Sergei M. Sitnik , Khaled Mehrez

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…

经典分析与常微分方程 · 数学 2017-08-03 Khaled Mehrez

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

In the paper, we present a monotonicity result of a function involving the gamma function and the logarithmic function, refine a double inequality for the gamma function, and improve some known results for bounding the gamma function.

经典分析与常微分方程 · 数学 2012-05-21 Feng Qi , Bai-Ni Guo

In this note our aim is to point out that certain inequalities for modified Bessel functions of the first and second kind, deduced recently by Laforgia and Natalini, are in fact equivalent to the corresponding Tur\'an type inequalities for…

经典分析与常微分方程 · 数学 2013-05-06 Árpád Baricz , Saminathan Ponnusamy

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 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
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