Results 11 to 20 of about 18,893 (283)

S-asymptotic expansion of distributions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
This paper contains first a definition of the asymptotic expansion at infinity of distributions belonging to G′Rn, named S-asymptotic expansion, as also its properties and application to partial differential equations.
Bogoljub Stankovic
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MHD Flow due to the Nonlinear Stretching of a Porous Sheet

open access: yesAdvances in Mathematical Physics, 2016
The MHD flow due to the nonlinear stretching of a porous sheet is investigated. A closed form solution is obtained when the stretching rate is inversely proportional to the distance from the origin.
Tarek M. A. El-Mistikawy
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A Viscous Fluid Flow through a Thin Channel with Mixed Rigid-Elastic Boundary: Variational and Asymptotic Analysis

open access: yesAbstract and Applied Analysis, 2012
We study the nonsteady Stokes flow in a thin tube structure composed by two thin rectangles with lateral elastic boundaries which are connected by a domain with rigid boundaries.
R. Fares, G. P. Panasenko, R. Stavre
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Integral Representation and Asymptotic Expansion for Hypergeometric Coherent States

open access: yesMathematics, 2022
An integral representation is found for hypergeometric coherent states. It contains a generalized hypergeometric function. An asymptotic expansion of hypergeometric coherent states near z=1 is constructed.
Alexander Pereskokov
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The step-type contrast structure for a second order semi-linear singularly perturbed differential-difference equation

open access: yesAdvances in Difference Equations, 2020
The step-type contrast structure for a second order semi-linear singularly perturbed differential-difference equation is studied. Using the methods of boundary function and fractional steps, we construct the formula asymptotic expansion of the problem ...
Mei Xu, Bingxian Wang
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An Alternative Approach to Energy Eigenvalue Problems of Anharmonic Potentials

open access: yesAdvances in Mathematical Physics, 2014
Energy eigenvalues of quartic and sextic type anharmonic potentials are obtained by using an alternative method called asymptotic Taylor expansion method (ATEM) which is an approximate approach based on the asymptotic Taylor series expansion of a ...
Okan Ozer, Halide Koklu
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Cosmic branes and asymptotic structure

open access: yesJournal of High Energy Physics, 2019
Superrotations of asymptotically flat spacetimes in four dimensions can be interpreted in terms of including cosmic strings within the phase space of allowed solutions.
F. Capone, M. Taylor
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On the Sharp Gårding Inequality for Operators with Polynomially Bounded and Gevrey Regular Symbols

open access: yesMathematics, 2020
In this paper, we analyze the Friedrichs part of an operator with polynomially bounded symbol. Namely, we derive a precise expression of its asymptotic expansion.
Alexandre Arias Junior, Marco Cappiello
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Regularization and asymptotic expansion of certain distributions defined by divergent series

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1995
The regularization of the distribution ∑n=−∞∞δ(x−pn). which gives a regularized value to the divergent series ∑n=−∞∞φ(pn) is obtained in several spaces of test functions. The asymptotic expansion as ϵ→0+of series of the type ∑n=0∞φ(ϵ pn) is also obtained.
Ricardo Estrada
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An asymptotic expansion for a ratio of products of gamma functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
An asymptotic expansion of a ratio of products of gamma functions is derived. It generalizes a formula which was stated by Dingle, first proved by Paris, and recently reconsidered by ...
Wolfgang Bühring
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