Abstract
In this article we obtain discrete inf-sup conditions and error bounds for a fictitious domain with Lagrange multiplier treatment for the boundary condition on the curved boundary to an elliptic Dirichlet problem with conforming finite elements of degree one on a uniform mesh.
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Pan, TW. Error bounds for a fictitious domain method with Lagrange multiplier treatment on the boundary for a Dirichlet problem. Japan J. Indust. Appl. Math. 15, 75–85 (1998). https://doi.org/10.1007/BF03167397
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DOI: https://doi.org/10.1007/BF03167397