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Trees, Teeth, and Time: The mathematics of clock making (ams.org)
90 points by espeed on Sept 26, 2018 | hide | past | favorite | 4 comments



I skimmed the article and saved it for later reading.

Just wanted to point out that continued fractions are also interesting for those trying to encode hierarchical data into SQL tables: https://arxiv.org/pdf/cs/0402051.pdf


Yeah, that's a good paper -- Vadim's nested-interval tree method is quite clever. For more related references, see...

Using rational numbers to key nested sets https://news.ycombinator.com/item?id=13517490


Gap keys are generally good enough.


On a related note, if you’re interested in clockmaking, the amazing YouTuber ClickSpring has an entire series where he builds a beautiful clock from scratch.




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