We investigate time harmonic Maxwell equations in heterogeneous media, where the permeability and the permittivity are piecewise constant. The associated boundary value problem can be interpreted as a transmission problem. In a very natural way the interfaces can have edges and corners. We give a detailed description of the edge and corner singularities of the electromagnetic fields.
Preprint IRMAR 98-24 (May 98) and Modél. Math. Anal. Numér. 33, 3, 627-649, 1999.
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