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Mathematics of Computation

Published by the American Mathematical Society, the Mathematics of Computation (MCOM) is devoted to research articles of the highest quality in all areas of pure and applied mathematics.

ISSN 1088-6842 (online) ISSN 0025-5718 (print)

The 2020 MCQ for Mathematics of Computation is 1.98.

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Equivalence of Nyström’s method and Fourier methods for the numerical solution of Fredholm integral equations
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by Jean-Paul Berrut and Manfred R. Trummer PDF
Math. Comp. 48 (1987), 617-623 Request permission


Nyström’s method with the trapezoidal rule, and the Fourier method, produce the same approximation to the solution of an integral equation at the collocation points for Nyström’s method. This equivalence allows the derivation of error estimates for Nyström’s method, and gives an intuitive explanation for its good performance in the periodic case. The equivalence holds for Fourier methods with arbitrary orthogonal basis functions. The quadrature rule for numerical integration must have the collocation points as abscissae, and must yield the exact entries of the Gramian matrix of the orthogonal basis.
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Additional Information
  • © Copyright 1987 American Mathematical Society
  • Journal: Math. Comp. 48 (1987), 617-623
  • MSC: Primary 45L10; Secondary 42A10, 65R20
  • DOI:
  • MathSciNet review: 878694