Approximating the singular integrals of Cauchy type with weight function on the interval

K. Eshkuvatov, Zainidin and Nik Long, Nik Mohd Asri (2010) Approximating the singular integrals of Cauchy type with weight function on the interval. Journal of Computational and Applied Mathematics . ISSN 0377-0427

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Official URL: http://dx.doi.org/10.1016/j.cam.2010.09.013

Abstract

It is known that the solutions of characteristic singular integral equations (SIEs) are expressed in terms of singular integrals of Cauchy type with weight functions w (x) = (1 + x)ν (1 - x)μ, where ν = ± frac(1, 2), μ = ± frac(1, 2). New quadrature formulas (QFs) are presented to approximate the singular integrals (SIs) of Cauchy type for all solutions of characteristic SIE on the interval [- 1, 1]. Linear spline interpolation, modified discrete vortex method and product quadrature rule are utilized to construct the QFs. Estimation of errors are obtained in the classes of functions Hα ([- 1, 1], A) and C1 ([- 1, 1]). It is found that the numerical results are very stable even for the cases of semi-bounded and unbounded solutions of singular integral equation of the first kind.

Item Type:Article
Keyword:Approximation, Discrete vortex method, Quadrature formula, Singular integral, Singular integral equations, Spline
Faculty or Institute:Institute for Mathematical Research
Publisher:Elsevier
DOI Number:10.1016/j.cam.2010.09.013
ID Code:8755
Deposited By: Erni Suraya Abdul Aziz
Deposited On:17 Dec 2010 00:49
Last Modified:17 Dec 2010 00:53

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