Title: Type-II MatricesSpeaker Chris Godsil Affiliation: University of Waterloo Room MC 6486
The Schur product M o N of two matrices M and N is the usual entrywise product. The matrix N is the Schur inverse of M if M o N = J. Denote the Schur inverse of M by M(-). An n x n matrix is a type-II matrix if
WW(-)T = nI.