New recursive preconditioning algorithms solve k-well-conditioned linear systems and regressions in Õ(d² + k^ω) time, matching the conditional lower bound and yielding the first nearly-linear-time nuclear norm approximation.
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Approaching Optimality for Solving Dense Linear Systems with Low-Rank Structure
New recursive preconditioning algorithms solve k-well-conditioned linear systems and regressions in Õ(d² + k^ω) time, matching the conditional lower bound and yielding the first nearly-linear-time nuclear norm approximation.