Coupled Domain-Boundary Variational Formulations For Hodge-Helmholtz Operators
Erick Schulz Ralf Hiptmair
math.AP 35Q61 (Primary), 35Q60 (Secondary), 65N30, 65N38, 78A45, 78M10,
  78M15
















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  title= Transmission Problem

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  title= Symmetrically Coupled Problem

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  title= Symmetry of Calderón Projector












