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تسجيل مستخدم جديدMortar coupling of $hp$-discontinuous Galerkin and boundary element methods for the Helmholtz equation
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We design and analyze a coupling of a discontinuous Galerkin finite element method with a boundary element method to solve the Helmholtz equation with variable coefficients in three dimensions. The coupling is realized with a mortar variable that is related to an impedance trace on a smooth interface. The method obtained has a block structure with nonsingular subblocks. We prove quasi-optimality of the $h$- and $
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