Results 81 to 90 of about 1,096,865 (195)

Integral Transforms in Number Theory

open access: yesAxioms
Integral transforms play a fundamental role in science and engineering. Above all, the Fourier transform is the most vital, which has some specifications—Laplace transform, Mellin transform, etc., with their inverse transforms. In this paper, we restrict
Guodong Liu   +2 more
doaj   +1 more source

The discrete Fourier-Riccati-Bessel transform for Robin boundary conditions

open access: yes, 2010
In this paper we generalize the discrete Fourier-Ricatti-Bessel transform, allowing, via choice of several appropriate parameters, the recovery of the discrete Fourier sine transform, the discrete Hankel transform, and the discrete Fourier-Ricatti-Bessel
Manley, Kevin W.
core  

Uncertainty principles for the kontorovich‐lebedev transform

open access: yesMathematical Modelling and Analysis, 2008
By using classical uncertainty principles for the Fourier transform and composition properties of the Kontorovich‐Lebedev transform, analogs of the Hardy, Beurling, Cowling‐Price, Gelfand‐Shilov and Donoho‐Stark theorems are obtained.
Semyon B. Yakubovich
doaj   +1 more source

A New Form of the Spherical Expansion of Zonal Functions and Fourier Transforms of SO(d)-Finite Functions

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2006
This paper presents recent results obtained by the authors (partly in collaboration with A. Dabrowska) concerning expansions of zonal functions on Euclidean spheres into spherical harmonics and some applications of such expansions for problems involving ...
Agata Bezubik, Aleksander Strasburger
doaj  

Effect of Shear on Ultrasonic Flow Measurement Using Nonaxisymmetric Wave Modes

open access: yesShock and Vibration, 2014
Nonaxisymmetric wave propagation in an inviscid fluid with a pipeline shear flow is investigated. Mathematical equation is deduced from the conservations of mass and momentum, leading to a second-order differential equation in terms of the acoustic ...
Yong Chen   +3 more
doaj   +1 more source

A fast and accurate method for perturbative resummation of transverse momentum-dependent observables

open access: yesJournal of High Energy Physics, 2018
We propose a novel strategy for the perturbative resummation of transverse momentum-dependent (TMD) observables, using the q T spectra of gauge bosons (γ ∗, Higgs) in pp collisions in the regime of low (but perturbative) transverse momentum q T as a ...
Daekyoung Kang   +2 more
doaj   +1 more source

Fourier series of functions whose Hankel transform is supported on [0, 1 [PDF]

open access: yes, 1994
. Let Jµ denote the Bessel function of order µ. For α> −1, the system x−α/2−1/2Jα+2n+1(x1/2), n = 0, 1, 2,... is orthogonal on L2((0,∞), xα dx). In this paper we study the mean convergence of Fourier series with respect to this system for functions ...
Varona, J.L. [0000-0002-2023-9946]   +1 more
core   +1 more source

On recovery of the solution to the Cauchy problem for the singular heat equation

open access: yesСовременная математика: Фундаментальные направления
We present the results related to the solution of the problem of the best recovery of the solution to the Cauchy problem for the heat equation with the B-elliptic Laplace-Bessel operator in spatial variables from an exactly or approximately known finite ...
S. M. Sitnik   +2 more
doaj   +1 more source

Asymptotically steerable finite Fourier-Bessel transforms and closure under convolution

open access: yesAdvances in Computational Mathematics
Abstract This paper develops a constructive numerical scheme for Fourier-Bessel approximations on disks compatible with convolutions supported on disks. We address accurate finite Fourier-Bessel transforms (FFBT) and inverse finite Fourier-Bessel transforms (iFFBT) of functions on disks using the discrete Fourier Transform (DFT) on ...
Arash Ghaani Farashahi   +1 more
openaire   +2 more sources

Fourier Transform of Bessel Type Functions [PDF]

open access: yes, 2015
Bessel type functions (BTFs), which are one of the types of exponential type functions (ETFs), are used usually as basis functions in the multi-center atomic and molecular integrals to better understand physical and chemical properties of matter.
Yükçü, Niyazi
core  

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