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Beschreibung:
The subject of this paper are Hs and Lp-regularity-results for the stationary and transient Maxwell-equations with mixed boundary-conditions in a bounded spatial domain are proved. First it is shown that certain elements belonging to the fractional-order domain of the Maxwell-operator belong to Hs(Ω) for sufficiently small s > 0. It follows from this regularity result that Hs(Ω) is an invariant subspace of the unitary group corresponding to the homogeneous Maxwell-equations with mixed boundary-conditions. In the case that a possibly nonlinear conductivity is present a Lp -regularity-theorem for the transient equations is proved.