Franchi, Massimo; Paruolo, Paolo - Dipartimento di Scienze Statistiche, Facoltà di … - 2011
The `local rank factorization' (lrf) of a regular matrix polynomial at an eigenvalue consists of a sequence of matrix rank factorizations of a certain function of its coecients; the lrf delivers the local Smith form and extended canonical systems of root functions that correspond to the...