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<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Rational trigonometry via projective geometric algebra · HackerPapers discussions</title><link>https://hackerpaper.kaipfister.de/p/1401.2371/</link><description>Collected HN comments and submissions linking this paper.</description><language>en</language><lastBuildDate>Mon, 02 Nov 2026 11:16:22 GMT</lastBuildDate><atom:link href="https://hackerpaper.kaipfister.de/p/1401.2371/feed.xml" rel="self" type="application/rss+xml" /><item><title>Rational trigonometry via projective geometric algebra — mentioned by Ericson2314</title><link>https://news.ycombinator.com/item?id=24317128</link><guid isPermaLink="false">urn:hackerpapers:mention:1401.2371:24317128</guid><pubDate>Sat, 29 Aug 2020 16:14:58 GMT</pubDate><description>&lt;p&gt;Thankfully it&amp;#x27;s buried at the end of the article: &amp;gt; Beyond 4D, you could continue using NxN rotation matrices, but since GPUs don’t support that, I’d use rotors from Geometric Algebra to simplify implementation, which is how you generalize quaternions to higher dimensions. All hail Clifford! https://arxiv.org/abs/1401.2371 for elegant and computationally efficient methods&lt;/p&gt;&lt;p&gt;&lt;a href="https://hackerpaper.kaipfister.de/p/1401.2371/"&gt;Paper and discussion history&lt;/a&gt;. A mention is not an endorsement.&lt;/p&gt;</description><category>math.GM</category></item><item><title>Rational trigonometry via projective geometric algebra — mentioned by Ericson2314</title><link>https://news.ycombinator.com/item?id=19636138</link><guid isPermaLink="false">urn:hackerpapers:mention:1401.2371:19636138</guid><pubDate>Thu, 11 Apr 2019 16:14:20 GMT</pubDate><description>&lt;p&gt;So glad this is the first comment. https://arxiv.org/abs/1401.2371 for ultimate contrarian math.&lt;/p&gt;&lt;p&gt;&lt;a href="https://hackerpaper.kaipfister.de/p/1401.2371/"&gt;Paper and discussion history&lt;/a&gt;. A mention is not an endorsement.&lt;/p&gt;</description><category>math.GM</category></item></channel></rss>
