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arXiv 2002.047362020-02-11math.NAcs.NA

Numerical solution of a class of third-kind Volterra integral equations using Jacobi wavelets

Somayeh Nemati, Pedro M. Lima, Delfim F. M. Torres

备注：: This is a preprint of a paper whose final and definite form is with 'Numer. Algorithms', Print ISSN 1017-1398, Electronic ISSN 1572-9265, available at [https://www.springer.com/journal/11075]. Submitted 12-Oct-2019; Revised 17-Dec-2019; Accepted 11-Feb-2020
发表信息：: Numer. Algorithms 86 (2021), no. 2, 675--691
DOI：: 10.1007/s11075-020-00906-9

英文摘要：

We propose a spectral collocation method, based on the generalized Jacobi wavelets along with the Gauss-Jacobi quadrature formula, for solving a class of third-kind Volterra integral equations. To do this, the interval of integration is first transformed into the interval [-1,1], by considering a suitable change of variable. Then, by introducing special Jacobi parameters, the integral part is approximated using the Gauss-Jacobi quadrature rule. An approximation of the unknown function is considered in terms of Jacobi wavelets functions with unknown coefficients, which must be determined. By substituting this approximation into the equation, and collocating the resulting equation at a set of collocation points, a system of linear algebraic equations is obtained. Then, we suggest a method to determine the number of basis functions necessary to attain a certain precision. Finally, some examples are included to illustrate the applicability, efficiency, and accuracy of the new scheme.

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