Results 21 to 30 of about 8,561 (218)

Some inequalities of Bessel and modified Bessel functions [PDF]

open access: yesJournal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1991
AbstractTwo-sided inequalties for the ratio of modified Bessel functions of first kind are given, which provide sharper upper and lower bounds than had been known earlier. Wronskian type inequalities for Bessel functions are proved, and in the sequel alternative proofs of Turan-type inequalities for Bessel and modified Bessel functions are also ...
C. M. Joshi, S. K. Bissu
openaire   +1 more source

On the characterization properties of certain hypergeometric functions in the open unit disk

open access: yesJournal of Inequalities and Applications, 2022
Our purpose in the present investigation is to study certain geometric properties such as the close-to-convexity, convexity, and starlikeness of the hypergeometric function z 1 F 2 ( a ; b , c ; z ) $z{}_{1}F_{2}(a;b,c;z)$ in the open unit disk.
Deepak Bansal   +3 more
doaj   +1 more source

Certain inequalities for the modified Bessel-type function

open access: yesJournal of Inequalities and Applications, 2019
We establish some new inequalities for the modified Bessel-type function λν,σ(β)(x) $\lambda _{\nu ,\sigma }^{(\beta )} (x )$ studied by Glaeske et al. [in J. Comput. Appl. Math.
Min-Jie Luo, Ravinder Krishna Raina
doaj   +1 more source

On generalized Bessel–Maitland function

open access: yesAdvances in Difference Equations, 2021
An approach to the generalized Bessel–Maitland function is proposed in the present paper. It is denoted by J ν , λ μ $\mathcal{J}_{\nu , \lambda }^{\mu }$ , where μ > 0 $\mu >0$ and λ , ν ∈ C $\lambda ,\nu \in \mathbb{C\ }$ get increasing interest from ...
Hanaa M. Zayed
doaj   +1 more source

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

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   +1 more source

Extrapolation of Electromagnetic Response from Linear Antennas in Time Domain without Late-Time Instabilities in Numerical Solution of EFI Equation

open access: yesJournal of Telecommunications and Information Technology, 2020
The paper presents a new hybrid method relied upon to solve integral equations of the electric field in time domain and to model linear antennas with pulse excitation.
Anna Witenberg
doaj   +1 more source

The trajectory of a charged particle in the magnetic field of an infinite current carrying wire in the nonrelativistic limit

open access: yesResults in Physics, 2019
We have calculated in a closed form solution, in terms of modified Bessel function the first kind of order 0 and 1, for the motion of a positively charged particle in the magnetic field of an infinitely long, current-carrying wire in the nonrelativistic ...
Masoud Asadi-Zeydabadi, Clyde S. Zaidins
doaj   +1 more source

Properties of the Turánian of modified Bessel functions [PDF]

open access: yesMathematical Inequalities & Applications, 2017
In this paper some new series and integral representations for the Turánian of modified Bessel functions of the first kind are given, which give new asymptotic expansions and tight bounds for the Turán determinant in the question. It is shown that in the case of natural and real order the Turánian can be represented in a relatively compact form, which ...
Mező, István, Baricz, Árpád
openaire   +2 more sources

Dynamics of internal gravity waves in the ocean with shear flows

open access: yesRussian Journal of Earth Sciences, 2020
The problem of the harmonic internal gravity wave dynamics in a stratified ocean of finite depth with shear flows is solved. Stratification with constant distribution of the buoyancy frequency and various linear dependences of the shear flow on depth ...
Bulatov V V, Vladimirov Yu V
doaj   +1 more source

Aplikasi Persamaan Bessel Orde Nol Pada Persamaan Panas Dua Dimensi

open access: yesJurnal Fourier, 2013
Bessel differential equation is one of the applied equation in physics is about heat transfer. Application of modified Bessel function of order zero on heat transfer process of two-dimensional objects which can be modelled in the form of a two-order ...
Annisa Eki Mulyati, Sugiyanto Sugiyanto
doaj   +1 more source

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