Generalized least squares: quadratic form $Q$, GLS estimator, estimator covariance, Moore–Penrose inverse (Eqs. (B.1)–(B.2))

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Generalized least squares: quadratic form $Q$, GLS estimator, estimator covariance, Moore–Penrose inverse (Eqs. (B.1)–(B.2)) · Prove2Me