diagonal matrix

diagonal matrix
a square matrix in which all the entries except those along the diagonal from upper left to lower right are zero.
[1925-30]

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  • Matrix (mathematics) — Specific elements of a matrix are often denoted by a variable with two subscripts. For instance, a2,1 represents the element at the second row and first column of a matrix A. In mathematics, a matrix (plural matrices, or less commonly matrixes)… …   Wikipedia

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