Plane wave expansion method: Difference between revisions

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</math>
 
with the fourier series coefficients being the K numbers subscripted by m, n respectively, and the reciprocal lattice [[Vector (mathematics and physics)|vector]] given by <math>\vec{G}</math>. In real modeling, the range of components considered will be reduced to just <math>\pm Nmax</math> instead of the ideal, infinite wave.
 
Using these expansions in any of the curl-curl relations like,