Strong unified-least-squares matrices for a general linear model
A necessary and sufficient condition is established for the range of a product \(AB^-C\) to be a subspace of the range of a matrix D irrespective of the choice of a generalized inverse \(B^-\) of B. This result is applicable in establishing a characterization of strong unified-least-squares matrices for a general linear model.
characterization of strong unified-least-squares matrices
scientific article; zbMATH DE number 3936235