Complete Low Frequency Asymptotics for Time-Harmonic Generalized Maxwell   Equations in Nonsmooth Exterior Domains
  We continue the study of the operator of generalized Maxwell equations and completely discover the behavior of the solutions of the time-harmonic equations as the frequency tends to zero. Thereby, we identify degenerate operators in terms of special 'polynomially growing' solutions of a corresponding static problem, which must be added to the 'usual' Neumann series in order to describe the low frequency asymptotic adequately. 
Dirk Pauly
math.AP math-ph math.DG math.MP