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>> No.14886740 [View]
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14886740

>I have a unit lower-triangular matrix [math]L[/math]
>I apply QR decomposition to obtain [math]L=QR[/math]
>I then run LU decomposition on the orthogonal matrix Q, to obtain [math]Q=PL'U[/math].

Assuming correctness and stability of the decomposition algorithms, will I always get [math]L=L'[/math]? How about [math]P=I[/math]?

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