Abstract
We obtain error estimates for the finite element solution of elliptic problems with Neumann boundary conditions for domains with curved boundaries using fictitious domain/penalty methods.
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Glowinski, R., Pan, TW. Error estimates for fictitious domain/penalty/finite element methods. Calcolo 29, 125–141 (1992). https://doi.org/10.1007/BF02576766
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DOI: https://doi.org/10.1007/BF02576766