S. Liu et al., EQUALITY CONDITIONS FOR MATRIX KANTOROVICH-TYPE INEQUALITIES, Journal of mathematical analysis and applications, 212(2), 1997, pp. 517-528
Following a recent paper of S. Liu and H. Neudecker (J. Math. Anal. Ap
pl. 197, 1996, 23-26), we present sufficient and necessary conditions
(SNECs) under which equalities occur in those corresponding matrix Kan
torovich-type inequalities. We also present several relevant inequalit
ies. (C) 1997 Academic Press.