This is a preview. Log in through your library . Journal Information Econometric Theory provides an authoritative outlet for original contributions in all of the major areas of econometrics. As well ...

This is a preview. Log in through your library . Abstract Let Ω = {X ∈ ℂn×p AX = B, XH = K, and AA†B = B,KH†H = K, AK = BH}, and let f(X) = (XC + D)M(XC + D)∗ − G be a given quadratic Hermitian matrix ...