Rank of matrix pencils at infinity and its applications in descriptor systems
Dong-ging Wang, Cheong Boon Soh, X.K. Xie · 1997
The rank of matrix pencils sX+Y at infinity denoted by rank/sub /spl infin//(sX+Y) is defined via their MacMillan forms at infinity. This new terminology is useful for studying the control problem of infinite frequency modes in descriptor systems.