Since evaluating a matrix condition number usually takes $O(n^3)$, I wonder whether there is an efficient $O(n^2)$ way to estimate in MATLAB a matrix condition number given its LDL decomposition.
Thank you!
2026-04-02 10:14:41.1775124881
Is there an efficient $O(n^2)$ way to estimate in MATLAB a matrix condition number given its LDL decomposition?
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