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Given LU decomposition of matrix A, How to solve $(A-uv^T)x=b$?

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#algorithms #matrix-equations #computational-complexity #lu-decomposition
381
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Updating Cholesky decomposition when deleting one row and one and column.

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#linear-algebra #matrix-calculus #matrix-decomposition #covariance #lu-decomposition
344
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Optimal pivoting strategy in LU factorization

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#numerical-methods #numerical-linear-algebra #gaussian-elimination #lu-decomposition
75
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LU decomposition of a matrix given LU decomposition of its blocks.

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#linear-algebra #matrix-calculus #lu-decomposition
3.1k
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How to compute amount of floating point operations for LU-decomposition of banded matrix?

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#numerical-methods #gaussian-elimination #floating-point #sparse-matrices #lu-decomposition
290
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I want to know $PA=LU$ , what is $P$??

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#matrices #lu-decomposition
3.1k
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Which one is most cost expensive to solve a linear equation? LU or inverse?

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#linear-algebra #inverse #gaussian-elimination #lu-decomposition
519
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Is there any way to use matrix decomposition for finding $A^n$?

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#matrices #eigenvalues-eigenvectors #matrix-decomposition #svd #lu-decomposition
443
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How can I find the pivot matrix from LU-factorization?

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#numerical-linear-algebra #lu-decomposition
140
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Numerical analysis, pivoting and incomplete LU decomposition

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#numerical-methods #lu-decomposition
322
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How can I find partial pivoting matrix $P$ from $PA=LU$ decomposition if we know $A,L,U$?

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#numerical-linear-algebra #lu-decomposition
209
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Schur complement in LUP decomposition of a block tridiagonal matrix

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#linear-algebra #block-matrices #tridiagonal-matrices #lu-decomposition #schur-complement
101
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Given the Cholesky decomposition of $A$, compute efficiently Cholesky decomposition of $RAR^T$?

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#matrices #matrix-decomposition #positive-definite #lu-decomposition
472
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LU decomposition of matrix product

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#linear-algebra #matrices #matrix-decomposition #lu-decomposition
108
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Show that $|A_k|\ne 0$

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#linear-algebra #matrices #determinant #matrix-decomposition #lu-decomposition

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