LU Decomposition [en] / LR-Zerlegung [de] of an NxN matrix -

online ([original](https://web.archive.org/web/20081020061504/http:/www.uni-bonn.de/~manfear/matrix%5Flu.php)) ([raw](?raw))

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Enter an **NxN** matrix in the field 'Matrix A' - row by row, separating the elements with spaces /or tabs/. The resulted matricesP, L and U, such thatPxA = LxU (P is a permutation matrix), will appear respectively in fields 'Matrix P', 'Matrix L' and 'Matrix U'.

You can enter fractions (floating numbers) using '/' (slash)-> 1/2, 3/4 or '.' (dot) -> 0.5, 0.75. The result appears always with slashes.

Note:The upper textareas have no wrap attribute and the browser will split all lines (in two or more) when they are longer thantextarea's width. The matrix will become then hardly readable. View version of this document which uses the wrap attribute(the longer lines will not be splitted) andthereforeis no longer validXHTML.