Geodesic
The generalization of some properties of universal matrices
Mathematica Applicanda, Tome 20 (1991) no. 34, pp. 59-63.

Voir la notice de l'article provenant de la source Annales Societatis Mathematicae Polonae Series

We consider an k x k universal matrix G introduced by Hellwig (1976). We analyze two problems: the nonsingularity of the matrix G and the sign-consistency of the elements of the vector r = (ri) and of the solutrion b = (bi) to the system Gb = r. Obtained results generalize the results presented by Kolupa (1977, 1980).
DOI : 10.14708/ma.v20i34.1785
Classification : 62H20 (15A09, 15A57, 62J05)
Mots-clés : Measures of association, Matrix inversion, generalized inverses, Linear regression 
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Jan Hauke; Jolanta Krzyszkowska. The generalization of some properties of universal matrices. Mathematica Applicanda, Tome 20 (1991) no. 34, pp.  59-63. doi : 10.14708/ma.v20i34.1785. http://geodesic.mathdoc.fr/articles/10.14708/ma.v20i34.1785/

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