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In this article, we obtain several new weighted bounds for the numerical radius of a Hilbert space operator. The significance of the obtained results is the way they generalize many existing results in the literature; where certain values…

泛函分析 · 数学 2021-03-09 Shiva Sheybani , Mohammed Sababheh , Hamid Reza Moradi

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 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

We prove new bounds on bilinear forms with Kloosterman sums, complementing and improving a series of results by \'E. Fouvry, E. Kowalski and Ph. Michel (2014), V. Blomer, \'E. Fouvry, E. Kowalski, Ph. Michel and D. Mili\'cevi\'c (2017), E.…

数论 · 数学 2023-04-18 Bryce Kerr , Igor E. Shparlinski , Xiaosheng Wu , Ping Xi

We obtain new inequalities for the modified Bessel function of the second kind $K_\nu$ in terms of the gamma function. These bounds follow as special cases of inequalities that we derive for the kernel of the Kr\"{a}tzel integral…

经典分析与常微分方程 · 数学 2017-05-30 Robert E. Gaunt

We correct a small gap found in the authors' paper 'On bounds for the effective differential Nullstellensatz' (J Algebra 449:1-21, 2016). This gap is due to an inequality that does not generally hold. However, under one additional…

交换代数 · 数学 2020-11-17 Omar Leon Sanchez , Alexey Ovchinnikov

We give a shorter proof of Kanter's (1976) sharp Bessel function bound for concentrations of sums of independent symmetric random vectors. We provide sharp upper bounds for the sum of modified Bessel functions $I_0(x)+I_1(x)$, which might…

概率论 · 数学 2007-05-23 Lutz Mattner , Bero Roos

Tight bounds for several symmetric divergence measures are introduced, given in terms of the total variation distance. Each of these bounds is attained by a pair of 2 or 3-element probability distributions. An application of these bounds…

信息论 · 计算机科学 2016-11-15 Igal Sason

In this short note, we briefly comment on the analytical bounds that must be imposed on the parameter space of the Rezzolla-Zhidenko (RZ) metric-parametrization approach introduced in Ref. [1]. We hope this will clarify some of the…

广义相对论与量子宇宙学 · 物理学 2022-06-08 Prashant Kocherlakota , Luciano Rezzolla

We consider the approximation of a convolution of possibly different probability measures by (compound) Poisson distributions and also by related signed measures of higher order. We present new total variation bounds having a better…

概率论 · 数学 2017-03-08 Bero Roos

In the paper, some lower bounds for polygamma functions are refined.

经典分析与常微分方程 · 数学 2013-01-29 Feng Qi , Bai-Ni Guo

In this paper, a new lemma is proved and inequalities of Simpson type are established for co-ordinated convex functions and bounded functions.

经典分析与常微分方程 · 数学 2011-01-05 M. Emin Ozdemir , Ahmet Ocak Akdemir , Havva Kavurmaci , Merve Avci

This paper studies the theoretical construction and analytic error estimation of complex Bessel function-based conformal mappings in regions with randomly perturbed boundaries. First, we construct a conformal mapping applicable to such…

复变函数 · 数学 2024-11-13 Qiang Kang

In the survey paper, along one of main lines of bounding the ratio of two gamma functions, we look back and analyse some known results, including Wendel's, Gurland's, Kazarinoff's, Gautschi's, Watson's, Chu's, Lazarevi\'c-Lupa\c{s}'s,…

经典分析与常微分方程 · 数学 2014-05-08 Feng Qi

In this paper we consider a new kind of inequality related to fractional integration, motivated by Gressman's paper. Based on it we investigate its multilinear analogue inequalities. Combining with the Gressman's work on multilinear…

泛函分析 · 数学 2016-06-17 Ting Chen

An inequality, recently proposed by Franson [Phys. Rev. A 54, 3808 (1996)] is analyzed and improved. The inequality connects the change of the expectation value of an observable with the uncertainty of this observable. A strict bound on the…

量子物理 · 物理学 2009-10-30 Lev Vaidman , Ori Belkind

This work extends the Mond-Pecaric method to functions with multiple operators as arguments by providing arbitrarily close approximations of the original functions. Instead of using linear functions to establish lower and upper bounds for…

泛函分析 · 数学 2024-07-09 Shih-Yu Chang

In this paper we establish a refinement of the companion of Ostrowski inequality for functions of bounded variation. Applications for the trapezoid inequality, the mid-point inequality, and to probability density functions are also given.

泛函分析 · 数学 2012-07-18 Wenjun Liu , Yun Sun

By use of a modified Nunokawa's lemma, we obtain some new conditions for univalence. Also, some sharp inequalities concerning univalent functions are presented.

复变函数 · 数学 2018-12-20 M. M. Motamedinezhad , R. Kargar

Certain smoothing inequalities were proposed in the recent paper posted on arXiv at arxiv:1301.2828 in order to lessen the very large gap between the best correctly established upper and lower bounds on the constant factor in the nonuniform…

概率论 · 数学 2013-04-30 Iosif Pinelis