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Quantitative error estimates for coefficient idealization in linear elliptic problems
Journal article   Peer reviewed

Quantitative error estimates for coefficient idealization in linear elliptic problems

Weimin Han
Mathematical Methods in the Applied Sciences, Vol.17(12), pp.971-987
09/25/1994
DOI: 10.1002/mma.1670171206

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Abstract

We give a thorough quantitative error analysis for the effect of coefficient idealization on solutions of linear elliptic boundary value problems. The a posteriori error estimate is derived by a tactful application of the duality theory in convex analysis. The estimate involves an auxiliary function subject to certain constraint. We discuss in detail the selection of a good auxiliary function for various cases. Numerical examples show the effectiveness of our a posteriori error estimate.

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