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Error analysis of a boundary element collocation method for a screen problem in $\textbf {R}^ 3$

Authors: M. Costabel, F. Penzel and R. Schneider
Journal: Math. Comp. 58 (1992), 575-586
MSC: Primary 65N38; Secondary 65R20
MathSciNet review: 1122060
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Abstract: We examine the numerical approximation of the first-kind integral equation on a plane rectangle defined by the single-layer potential of the three-dimensional Laplacian. The solution is approximated by nodal collocation with piecewise bilinear trial functions on a rectangular grid. We prove stability and convergence of this method in the Sobolev space ${\tilde H^{ - 1/2}}$. A key ingredient in the proof is the observation that the collocation equations define symmetric positive definite Toeplitz matrices.

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Article copyright: © Copyright 1992 American Mathematical Society