Abstract

The most general form of linear and local boundary conditions (General Boundary Conditions, GBC) is considered in this paper. The conditions are defined in terms of four vectors tangential to the boundary surface and two scalars. The number of parameters needed to define the conditions is at most 8. Well-known examples of boundary conditions are found to emerge for various choices of the vectors and scalars. The reflection dyadic yielding the reflected wave for a given incident plane wave is found and its eigenproblem is solved with examples considered in the paper.

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