Kogrediencia (mátrixok) (Hungarian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Kogrediencia (mátrixok)" in Hungarian language version.

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maths.ed.ac.uk

Sylvester, J J (1852). „A demonstration of the theorem that every homogeneous quadratic polynomial is reducible by real orthogonal substitutions to the form of a sum of positive and negative squares”. Philosophical Magazine IV, 138–142. o. (Hozzáférés: 2007. december 30.)