A problem on matrices
V. de Valk (1989)
Compositio Mathematica
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V. de Valk (1989)
Compositio Mathematica
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Marek Jukl (1998)
Mathematica Bohemica
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This paper deals with A-spaces in the sense of McDonald over linear algebras A of a certain type. Necessary and sufficient conditions for a submodule to be an A-space are derived.
Tomàs. Aluja Banet, Ramón Nonell Torrent (1991)
Qüestiió
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Principal Components Analysis deals mainly with the analysis of large data sets with multivariate structure in an observational context for exploraty purposes. The factorial planes produced will show the main oppositions between variables and individuals. However, we may be interested in going further by controlling the effect of some latent or third variable which expresses some well-defined phenomenon. We go through this by means of a graph among individuals, following the same idea...
Zdeněk Vavřín (1996)
Czechoslovak Mathematical Journal
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THOMAS L. SAATY (1999)
Revista de la Real Academia de Ciencias Exactas Físicas y Naturales
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