1403/04/03
سمیه نعمتی

سمیه نعمتی

مرتبه علمی: دانشیار
ارکید:
تحصیلات: دکترای تخصصی
اسکاپوس:
دانشکده: دانشکده علوم ریاضی
نشانی:
تلفن: 01135302419

مشخصات پژوهش

عنوان
Numerical solution of a class of third-kind Volterra integral equations using Jacobi wavelets
نوع پژوهش
JournalPaper
کلیدواژه‌ها
Third-kind Volterra integral equations · Jacobi wavelets · Gauss–Jacobi quadrature · Collocation points
سال
2021
مجله NUMERICAL ALGORITHMS
شناسه DOI
پژوهشگران Somayeh Nemati ، Pedro Lima ، Delfim F.M. Torres

چکیده

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.