Summary.
A domain with possibly non-Lipschitz boundary is defined as a limit of monotonically expanding or shrinking domains with Lipschitz boundary. A uniquely solvable Dirichlet boundary value problem (DBVP) is defined on each of the Lipschitz domains and the limit of these solutions is investigated. The limit function also solves a DBVP on the limit domain but the problem can depend on the sequences of domains if the limit domain is unstable with respect to the DBVP. The core of the paper consists in estimates of the difference between the respective solutions of the DBVP on two close domains, one of which is Lipschitz and the other can be unstable. Estimates for starshaped as well as rather general domains are derived. Their numerical evaluation is possible and can be done in different ways.
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Received October 16, 2001 / Revised version received January 16, 2002 / Published online: April 17, 2002
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ID="*" The research was funded partially by the National Science Foundation under the grants NSF–Czech Rep. INT-9724783 and NSF DMS-9802367
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ID="**" Support for Jan Chleboun coming from the Grant Agency of the Czech Republic through grant 201/98/0528 is appreciated
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Babuška, I., Chleboun, J. Effects of uncertainties in the domain on the solution of Dirichlet boundary value problems. Numer. Math. 93, 583–610 (2003). https://doi.org/10.1007/s002110200400
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DOI: https://doi.org/10.1007/s002110200400