Results 101 to 110 of about 2,040,052 (266)

Discontinuities in an axisymmetric generalized thermoelastic problem

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
This paper deals with discontinuities analysis in the temperature, displacement, and stress fields of a thick plate whose lower and upper surfaces are traction-free and subjected to a given axisymmetric temperature distribution.
Moncef Aouadi
doaj   +1 more source

Pitt's inequalities and uncertainty principle for generalized Fourier transform

open access: yes, 2015
We study the two-parameter family of unitary operators \[ \mathcal{F}_{k,a}=\exp\Bigl(\frac{i\pi}{2a}\,(2\langle k\rangle+{d}+a-2 )\Bigr) \exp\Bigl(\frac{i\pi}{2a}\,\Delta_{k,a}\Bigr), \] which are called $(k,a)$-generalized Fourier transforms and ...
Gorbachev, Dmitry   +2 more
core  

Simple closed form Hankel transforms based on the central coefficients of certain Pascal-like triangles [PDF]

open access: yes, 2006
We study the Hankel transforms of sequences related to the central coefficients of a family of Pascal-like triangles.
Barry, P.
core   +1 more source

Forma general de la transformada finita de Hankel General form of the finite Hankel transform

open access: yesRevista Técnica de la Facultad de Ingeniería, 2008
En este trabajo de investigación se obtiene una forma general de la Transformada Finita de Hankel en el intervalo [a, b], usando la teoría de las transformadas finitas de Sturm-Liouville.
Ovidio Pirela Cristalino   +1 more
doaj  

On a non-self adjoint eigenfunction expansion

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1984
This paper develops a formula of inversion for an integral transform similar to that associated with the names of Kontorovich and Lebedev. The kernel involves the Hankel function Hu(1)(kr), in which r varies over a truncated infinite interval a≤r0 and ...
D. Naylor
doaj   +1 more source

A distributional Hardy transformation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1979
The Hardy's F-transform F(t)=∫0∞Fv(ty)yf(y)dy is extended to distributions. The corresponding inversion formula f(x)=∫0∞Cv(tx)tF(t)dt is shown to be valid in the weak distributional sense.
R. S. Pathak, J. N. Pandey
doaj   +1 more source

Interpolation by Hankel Translates of a Basis Function: Inversion Formulas and Polynomial Bounds

open access: yesThe Scientific World Journal, 2014
For μ≥−1/2, the authors have developed elsewhere a scheme for interpolation by Hankel translates of a basis function Φ in certain spaces of continuous functions Yn (n∈ℕ) depending on a weight w.
Cristian Arteaga, Isabel Marrero
doaj   +1 more source

Calculation of Sommerfeld Integrals in Dipole Radiation Problems

open access: yesMathematics
This article proposes asymptotic methods for calculating Sommerfeld integrals, which enable us to calculate the integral using the expansion of a function into an infinite power series at the saddle point, where the role of a rapidly oscillating function
Seil Sautbekov   +3 more
doaj   +1 more source

Hankel matrix transforms and operators [PDF]

open access: yesJournal of Inequalities and Applications, 2012
Hankel operators and Hankel transforms are required in a number of applications. This article proves a number of theorems that efficiently and accurately approximates a function using Hankel transforms and Hankel sum. A characterization of the Hankel matrix sequences and Hankel matrix of semi-periodic and almost periodic sequences are also given.
openaire   +2 more sources

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