Results 61 to 70 of about 6,919,686 (232)

Some special functions and cylindrical diffusion equation on α-time scale

open access: yesDemonstratio Mathematica
This article is dedicated to present various concepts on α\alpha -time scale, including power series, Taylor series, binomial series, exponential function, gamma function, and Bessel functions of the first kind.
Silindir Burcu   +3 more
doaj   +1 more source

On a product of modified Bessel functions [PDF]

open access: yesProceedings of the American Mathematical Society, 2008
Summary: Let \(I_{\nu}\) and \( K_{\nu}\) denote the modified Bessel functions of the first and second kinds of order \( \nu.\) In this note we prove that the monotonicity of \( u \mapsto I_{\nu}(u)K_{\nu}(u)\) on \( (0,\infty)\) for all \( \nu\geq -1/2\) is an almost immediate consequence of the corresponding Turán type inequalities for the modified ...
openaire   +2 more sources

Asymptotic behavior of solutions to the multidimensional semidiscrete diffusion equation

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2022
We study the asymptotic behavior of solutions to the multidimensional diffusion (heat) equation with continuous time and discrete space. We focus on initial-value problems with bounded initial data, and provide sufficient conditions for the existence of ...
Antonín Slavík
doaj   +1 more source

Designing Wire Mazes for Replicating Natural Echoes to Study Bat Biosonar Function

open access: yesAdvanced Intelligent Systems, EarlyView.
A validated framework combining efficient physical modeling (multiple scattering model) and deep learning is presented to guide wire‐maze design for bat biosonar studies. This approach rapidly generates large datasets to test acoustic distinguishability among wire arrangements.
Chunlin Jia   +3 more
wiley   +1 more source

Propagation of modified Bessel-Gaussian beams in turbulence

open access: yes, 2008
We investigate the propagation characteristics of modified Bessel-Gaussian beams traveling in a turbulent atmosphere. The source beam formulation comprises a Gaussian exponential and the summation of modified Bessel functions.
Eyyuboglu, Halil Tanyer, Hardalac, Firat
core   +1 more source

On new formulae for cumulative distribution function for McKay Bessel distribution

open access: yes, 2021
Motivated by recent results by Nadarajah, Srivastava and Gupta (2007) in which the authors introduced a new formula for CDF F_K of the McKay Bessel function distribution containing the modified Bessel function K_nu we aim to present new formulae for F_K,
Poganj, Tibor   +1 more
core   +1 more source

Nonparaxial accelerating Bessel-like beams [PDF]

open access: yes, 2013
A new class of nonparaxial accelerating optical waves is introduced. These are beams with a Bessel-like profile that are capable of shifting laterally along fairly arbitrary trajectories as the wave propagates in free space.
Chremmos, Ioannis   +5 more
core   +1 more source

Solutions of a Nonlinear Diffusion Equation with a Regularized Hyper-Bessel Operator

open access: yesFractal and Fractional, 2022
We investigate the Cauchy problem for a nonlinear fractional diffusion equation, which is modified using the time-fractional hyper-Bessel derivative. The source function is a gradient source of Hamilton–Jacobi type. The main objective of our current work
Nguyen Hoang Luc   +2 more
doaj   +1 more source

Extended Riemann-Liouville type fractional derivative operator with applications

open access: yesOpen Mathematics, 2017
The main purpose of this paper is to introduce a class of new extended forms of the beta function, Gauss hypergeometric function and Appell-Lauricella hypergeometric functions by means of the modified Bessel function of the third kind.
Agarwal P., Nieto Juan J., Luo M.-J.
doaj   +1 more source

The Modified q-Bessel Functions and the q-Bessel-Macdonald Functions

open access: yes, 1995
We define a q-analog of the modified Bessel and Bessel-Macdonald functions. As for the q-Bessel functions of Jackson there is a couple of functions of the both kind. They are arisen in the Harmonic analysis on quantum symmetric spaces similarly to their classical counterpart. Their definition is based on the power expansions.
Olshanetsky, M. A., Rogov, V. -B. K.
openaire   +2 more sources

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