LU Decomposition

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In Mathematica, the function LUDecomposition factors a matrix into the form P L U, where P is a permutation matrix, L is a lower triangular matrix, and U is an upper triangular matrix. The decomposition fails for most matrices with zero-valued minors, such as (⁠011000010ColumnsColumnsIndexedRowsRowsIndexedColumnsColumnsIndexedRowsRowsIndexed⁠), although P L U may be close to .

Contributed by: Ed Pegg Jr (March 2011)
Open content licensed under CC BY-NC-SA


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