It is shown that the problem of finding a solution , of least McMillan degree, to the transfer matrix equation is in essence equivalent to the problem of finding an ( )-invariant subspace of least dimension which contains a given subspace.
Keywords :
Linear time-invariant (LTI) systems; Matrix equations; Transfer function matrices; Equations; Erbium; Matrices; State-space methods; Tellurium; Testing; Transfer functions;