What's this weird tree of fractions in that strange book Kepler wrote in 1619, "The Harmony of the World"? It may be a rather deep piece of mathematics! (continued)pic.twitter.com/gsfKEEftLR
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Like the ad where someone becomes a brain surgeon by spending a night at Holiday Inn, I became a Kepler scholar just by looking at this Wikipedia article: https://en.wikipedia.org/wiki/Calkin-Wilf_tree … I don't know if Kepler really knew the Calkin-Wilf tree. I'd like to learn more!
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