Results 11 to 20 of about 54,980 (218)

An integral containing a Bessel Function and a Modified Bessel Function of the First Kind [PDF]

open access: yes, 2017
Here we discuss the calculation of an integral containing the Bessel function J_0(r) and the modified Bessel function of the first kind I_1(r). The calculus is based on a function of J_0(r), I_1(r) and of their derivatives, having a Wronskian form.
Amelia Carolina Sparavigna
core   +3 more sources

The logarithmic concavity of modified Bessel functions of the first kind and its related functions [PDF]

open access: yesAdvances in Difference Equations, 2019
This research demonstrates the log-convexity and log-concavity of the modified Bessel function of the first kind and the related functions. The method of coefficient is used to verify such properties.
Thanit Nanthanasub   +2 more
doaj   +3 more sources

On approximating the modified Bessel function of the first kind and Toader-Qi mean [PDF]

open access: yesJournal of Inequalities and Applications, 2016
In the article, we present several sharp bounds for the modified Bessel function of the first kind I 0 ( t ) = ∑ n = 0 ∞ t 2 n 2 2 n ( n ! ) 2 $I_{0}(t)=\sum_{n=0}^{\infty}\frac{t^{2n}}{2^{2n}(n!)^{2}}$ and the Toader-Qi mean T Q ( a , b ) = 2 π ∫ 0 π ...
Zhen-Hang Yang, Yu-Ming Chu
doaj   +3 more sources

Geometric Nature of the Turánian of Modified Bessel Function of the First Kind

open access: yesAxioms
This work explores the geometric properties of the Turanian of the modified Bessel function of the first kind (TMBF). Using the properties of the digamma function, we establish conditions under which the normalized TMBF satisfies starlikeness, convexity,
Samanway Sarkar   +3 more
doaj   +2 more sources

Arithmetic Means for a Class of Functions and the Modified Bessel Functions of the First Kind [PDF]

open access: yesMathematics, 2019
In the paper, by virtue of the residue theorem in the theory of complex functions, the authors establish several identities between arithmetic means for a class of functions and the modified Bessel functions of the first kind, present several identities ...
Feng Qi, Shao-Wen Yao, Bai-Ni Guo
doaj   +2 more sources

Monotonicity of the ratio of modified Bessel functions of the first kind with applications [PDF]

open access: yesJournal of Inequalities and Applications, 2018
Let Wv(x)=xIv(x)/Iv+1(x) $W_{v} ( x ) =xI_{v} ( x ) /I_{v+1} ( x ) $ with Iv $I_{v}$ be the modified Bessel functions of the first kind of order v. In this paper, we prove the monotonicity of the function x↦(Wv(x)−p)2−(2v+2−p)2x2 $$ x\mapsto\frac{ ( W_{v}
Zhen-Hang Yang, Shen-Zhou Zheng
doaj   +4 more sources

Correction to: Geometric Properties of the Products of Modified Bessel Functions of the First Kind [PDF]

open access: yesBulletin of the Malaysian Mathematical Sciences Society, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Khaled Mehrez, Sourav Das, Anish Kumar
openaire   +2 more sources

Redheffer type bounds for Bessel and modified Bessel functions of the first kind [PDF]

open access: yesAequationes mathematicae, 2018
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 functions as well as on the monotonicity of quotients of two power series.
Baricz, Árpád, Mehrez, Khaled
openaire   +2 more sources

Convexity of ratios of the modified Bessel functions of the first kind with applications

open access: yesRevista Matemática Complutense, 2022
Let I ν x be the modified Bessel function of the first kind of order ν . Motivated by a conjecture on the convexity of the ratio W ν x = x I ν x / I ν + 1 x for ν > - 2 , using the monotonicity rules for a ratio of two power series and an elementary technique, we present fully the convexity of the functions W ν x , W ν x - x 2 / 2 ν + 4 ...
Zhen-Hang Yang, Jing-Feng Tian
openaire   +3 more sources

On the cumulative distribution function of the variance-gamma distribution [PDF]

open access: yes, 2023
We obtain exact formulas for the cumulative distribution function of the variance-gamma distribution, as infinite series involving the modified Bessel function of the second kind and the modified Lommel function of the first kind. From these formulas, we
Gaunt, Robert E.
core   +2 more sources

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