Results 11 to 20 of about 3,180 (259)

Asymptotic Expansions of the Wavelet Transform for Large and Small Values of b

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2009
Asymptotic expansions of the wavelet transform for large and small values of the translation parameter b are obtained using asymptotic expansions of the Fourier transforms of the function and the wavelet.
R. S. Pathak, Ashish Pathak
doaj   +1 more source

On a Test of Homogeneity of Variances [PDF]

open access: yesThe Egyptian Statistical Journal, 1985
In this paper asymptotic expansions of the non-null distribution of Bartlett's statistic for testing hemogeneity of variances of p normal populations are obtained under local lternatives. The expansions are in terms of chi-square distributions.
B.N. Nagarsenker, P.B. Nagarsenker
doaj   +1 more source

Analysis of quasi-lattice distributions of statistics from finite population

open access: yesLietuvos Matematikos Rinkinys, 2004
Edgeworth expansions are used for approximation of quantiles, estimation of parameters, construction of confidence intervals and testing hypothesis. Paper shows how to construct  ` `  long'' Edgewort asymptotic expansions.
Jurgita Turkuvienė, Algimantas Bikelis
doaj   +3 more sources

The Asymptotics of Solutions of a Singularly Perturbed Equation with a of Fractional Turning Point

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2017
We develop the classical Vishik – Lyusternik – Vasil’eva – Imanaliev boundary-value method for constructing uniform asymptotic expansions of solutions of singularly perturbed equations with singular points.
D. A. Tursunov, K. G. Kozhobekov
doaj   +1 more source

Analysis of Mixed Elliptic and Parabolic Boundary Layers with Corners

open access: yesInternational Journal of Differential Equations, 2013
We study the asymptotic behavior at small diffusivity of the solutions, uε, to a convection-diffusion equation in a rectangular domain Ω. The diffusive equation is supplemented with a Dirichlet boundary condition, which is smooth along the edges and ...
Gung-Min Gie   +2 more
doaj   +1 more source

Asymptotic expansions through the loop-tree duality

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
Asymptotic expansions of Feynman amplitudes in the loop-tree duality formalism are implemented at integrand-level in the Euclidean space of the loop three-momentum, where the hierarchies among internal and external scales are well-defined.
Judith Plenter, Germán Rodrigo
doaj   +1 more source

An order verification method for truncated asymptotic expansion solutions to initial value problems

open access: yesAlexandria Engineering Journal, 2022
The focus of this paper is to obtain explicit solutions to initial value problems, where numerical methods cannot provide one, and to verify the accuracy orders of the explicit solutions.
Sudi Mungkasi
doaj   +1 more source

Approximation formulas related to Somos’ quadratic recurrence constant

open access: yesJournal of Inequalities and Applications, 2018
We present two classes of asymptotic expansions related to Somos’ quadratic recurrence constant and provide the recursive relations for determining the coefficients of each class of the asymptotic expansions by using Bell polynomials and other techniques.
Bo Zhang, Chao-Ping Chen
doaj   +1 more source

Recurrence coefficients of Toda-type orthogonal polynomials I. Asymptotic analysis [PDF]

open access: yesBulletin of Mathematical Sciences, 2020
We study the three-term recurrence coefficients βn,γn, of polynomial sequences orthogonal with respect to a perturbed linear functional depending on a variable z. We obtain power series expansions in z, and asymptotic expansions as n →∞.
Diego Dominici
doaj   +1 more source

Asymptotic expansions for Yosida approximations of semigroups

open access: yesLietuvos Matematikos Rinkinys, 2008
In this paper we provide asymptotic expansions for Yosida approximations of contraction semigroups. We also obtain optimal bounds for convergencerate and remainder terms of asymptotic expansions.
Monika Vilkienė
doaj   +1 more source

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