.. _sect_reciprocity: Electromagnetic Reciprocity --------------------------- .. For CSEM modeling, each transmitter to be modeled results in a column vector for the right-hand side of the linear system. Thus if there are :math:`n_{tx}` transmitters, then :math:`n_{tx}` linear systems to solve. MARE2DEM uses a sparse matrix factorization routine to first factor the matrix (the most time consuming part) and then the solution to right hand side column vector