Averaged Nyström interpolants for the solution of Fredholm integral equations of the second kind

07/21/2023
by   Luisa Fermo, et al.
0

Fredholm integral equations of the second kind that are defined on a finite or infinite interval arise in many applications. This paper discusses Nyström methods based on Gauss quadrature rules for the solution of such integral equations. It is important to be able to estimate the error in the computed solution, because this allows the choice of an appropriate number of nodes in the Gauss quadrature rule used. This paper explores the application of averaged and weighted averaged Gauss quadrature rules for this purpose. New stability properties of the quadrature rules used are shown.

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