Measured equation of invariance: a new concept in field computations
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Numerical computations of frequency domain field problems or elliptical partial differential equations may be based on differential equations or integral equations. The new concept of field computation presented in this paper is based on the postulate of the existence of linear equations of the discretized nodal values of the fields, different from the conventional equations, but leading to the same solutions. The postulated equations are local and invariant to excitation. It is shown how the equations can be determined by a sequence of
CitationMei, K., Pous, R., Chen, Z., Liu, Y., Prouty, M. Measured equation of invariance: a new concept in field computations. "IEEE transactions on antennas and propagation", Octubre 1994, vol. 42, núm. 3, p. 202-214.