Criteria and tests for realizability of the inductance matrix

Energy considerations and experience have both indicated that measurements of the R, L, and C coefficients of an existing electrical network will lead to the positive semidefinite quadratic forms1‐
₃
$g^{T}(t)Rg(t) \ge0 \eqno {\hbox{(1)}}$ $Q^{T}(t)DQ(t) \ge0 \eqno {\hbox{(2)}}$ $g^{T}(t)Lg(t) \ge0 \eqno {\hbox{(3)}}$.