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<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Contemporary Infinitesimalist Theories of Continua and their late 19th- and early 20th-century forerunners · HackerPapers discussions</title><link>https://hackerpaper.kaipfister.de/p/1808.03345/</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/1808.03345/feed.xml" rel="self" type="application/rss+xml" /><item><title>Contemporary Infinitesimalist Theories of Continua and their late 19th- and early 20th-century forerunners — mentioned by MikeBattaglia</title><link>https://news.ycombinator.com/item?id=39796537</link><guid isPermaLink="false">urn:hackerpapers:mention:1808.03345:39796537</guid><pubDate>Sat, 23 Mar 2024 01:14:41 GMT</pubDate><description>&lt;p&gt;It isn&amp;#x27;t true for all ordered rings, and the dual numbers are in fact a counterexample to the claim that it is true. Beyond that I&amp;#x27;m not sure what to tell you, other than it&amp;#x27;s fairly easy to see that the dual numbers do satisfy the axioms of an ordered ring that I gave. Here&amp;#x27;s a large survey of various infinitesimal systems by Philip Ehrlich where he also notes the dual numbers are an ordered ring: https://arxiv.org/pdf/1808.03345.pdf.&lt;/p&gt;&lt;p&gt;&lt;a href="https://hackerpaper.kaipfister.de/p/1808.03345/"&gt;Paper and discussion history&lt;/a&gt;. A mention is not an endorsement.&lt;/p&gt;</description><category>math.HO</category></item></channel></rss>
