https://hackerpaper.kaipfister.de/p/1201.6035/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=11686786urn:hackerpapers:mention:1201.6035:11686786Thu, 12 May 2016 21:05:38 GMT<p>That article is quite right regarding the take-home message to try to avoid inverting a matrix when other, more direct methods for solving the particular problem at hand exist. On page 2 of http://www.ti3.tuhh.de/paper/rump/Ru08a.pdf there is an innocent-looking matrix for which the numerically computed inverse is off from the true inverse by 47 orders of magnitude. However, one of the reasons he&#x27;s given is not correct: Druinsky and Toledo have shown (http://arxiv.org/abs/1201.6035) that -- despite the very widespread belief to the contrary -- solving a linear system be calculating the…</p><p><a href="https://hackerpaper.kaipfister.de/p/1201.6035/">Paper and discussion history</a>. A mention is not an endorsement.</p>math.NA