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On the effect of numerical integration in the Galerkin boundary element method

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We discuss the effect of cubature errors when using the Galerkin method for approximating the solution of Fredholm integral equations in three dimensions. The accuracy of the cubature method has to be chosen such that the error resulting from this further discretization does not increase the asymptotic discretization error. We will show that the asymptotic accuracy is not influenced provided that polynomials of a certain degree are integrated exactly by the cubature method. This is done by applying the Bramble-Hilbert Lemma to the boundary element method.

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Received May 24, 1995

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Sauter, S., Krapp, A. On the effect of numerical integration in the Galerkin boundary element method . Numer. Math. 74, 337–359 (1996). https://doi.org/10.1007/s002110050220

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  • DOI: https://doi.org/10.1007/s002110050220

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