QR and permutation matrix

10272015, 06:48 AM
Post: #5




RE: QR and permutation matrix
I see, it is probably like total pivoting vs partial pivoting. Partial pivoting is used in LU and QR, but in the LU case this adds a generically non trivial permutation matrix (PA=LU, P^1*L would not be triangular) while in the QR case the permutation is absorbed by Q.


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Messages In This Thread 
QR and permutation matrix  Han  10262015, 03:04 PM
RE: QR and permutation matrix  parisse  10262015, 05:04 PM
RE: QR and permutation matrix  Han  10262015, 07:24 PM
RE: QR and permutation matrix  Han  10262015, 05:16 PM
RE: QR and permutation matrix  parisse  10272015 06:48 AM

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