Identity matrix

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Revision as of 11:15, 11 February 2008 by Dduque (talk | contribs) (New page: In linear algebra, the '''identity matrix''' or '''unit matrix''' is the square matrix with ones on the main diagonal and zeros elsewhere. It leaves intact any matrix on multiplication...)
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In linear algebra, the identity matrix or unit matrix is the square matrix with ones on the main diagonal and zeros elsewhere. It leaves intact any matrix on multiplication by it (either on the left, or on the right).