highly oscillatory kernel;
Gauss quadrature;
hypersingular integrals;
Chebyshev and modified Chebyshev algorithms;
algebraic and logarithm singular integrals;
CAUCHY PRINCIPAL VALUE;
ORTHOGONAL POLYNOMIALS;
EQUATIONS;
QUADRATURE;
D O I:
10.28924/2291-8639-18-2020-965
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
Herein, highly oscillatory integrals with hypersingular type singularities are studied. After transforming the original integral into a sum of line integrals over a positive semi-infinite interval, a Gauss-related quadrature rule is constructed. The vehicle utilized is the moment's information. The comparison of two algorithms (Chebyshev and its modified one) to produce the recursion coefficients that satisfy orthogonal polynomial with respect to Gautschi logarithmic weight function, is investigated. Lastly, numerical examples are given to substantiate the effectiveness of the proposed method.
机构:
Cent S Univ, Dept Math, Changsha 410083, Hunan, Peoples R China
Jishou Univ, Dept Math, Jishou 416000, Hunan, Peoples R ChinaCent S Univ, Dept Math, Changsha 410083, Hunan, Peoples R China
Mo, Hongmin
Xiang, Shuhuang
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机构:
Cent S Univ, Dept Math, Changsha 410083, Hunan, Peoples R China
Jishou Univ, Dept Math, Jishou 416000, Hunan, Peoples R ChinaCent S Univ, Dept Math, Changsha 410083, Hunan, Peoples R China
机构:
Cent S Univ, Dept Appl Math & Software, Changsha 410083, Hunan, Peoples R ChinaCent S Univ, Dept Appl Math & Software, Changsha 410083, Hunan, Peoples R China
Xiang, Shuhuang
Wang, Haiyong
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机构:
Cent S Univ, Dept Appl Math & Software, Changsha 410083, Hunan, Peoples R ChinaCent S Univ, Dept Appl Math & Software, Changsha 410083, Hunan, Peoples R China