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Is there a fast matrix-free inverse power iteration?

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Flexible Conjugate Residual

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Fill-reducing ordering for computing the matrix product $A^T A$?

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How to implement boundary conditions for the Thomas algorithm

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Best transform of matrix to make it efficient for shift-then-invert?

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Why for $A^T A$, it is faster to computer the eigenvalues of its inverse than itself?

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Computing smallest singular value of a matrix with explicit error control?

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