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Thought you might be the one to ask. Do you know of any connection between Arab algebra and zairjas mentioned here?

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On the calculating devices of Llull and Leibniz: publicdomainreview.org/essay/let-us-c Traces the origin of this method to medieval Arabic divination boards called “Zairjas” (زايرجة) likely a Persian portmanteau of zaicha (horoscope) + daira (circle).

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hmm not in arab algebra but that'd take more of a historian than me, I've used techniques similar to that though you could draw parallels between ideaspace and linear algebra, but ideaspace doesn't afford quite the same things as vector spaces

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while you can (very fruitfully) draw parallels in both, ideas are for example not commutative (twitter.com/allgebrah/stat + what remains of that thread)

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intuitively I'd go for trope=vector but tropes are only very roughly commutative, their ordering still matters ideaspace is more vector-spacey personally I conceptualize narratives as paths (synkretie.net/writings/wildp) but through something other than ideaspace

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super cool rabbithole actually, though you've probably already seen alpha60.de/research/scram since it's linked from en.wikipedia.org/wiki/Zairja?

en.wikipedia.org

Zairja - Wikipedia

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specifically, these look a lot like peg systems (ludism.org/mentat/PegSyst) which, along with other arts of memory, we've mostly forgotten about but back then they were vibrant, greek numerals for example (the arabic version of which seems to be used here) were used in gematria

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a peg system that rhymes is a fairly natural extension and would attract much the same people as those who already serve as astrologers, clerks etc

8:01 PM · Dec 21, 2019Twitter Web App

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I need to get down to the medieval memory systems sometime. Thanks for the link, let me dig down on this.

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that is acknowledged in the document but only as a kind of aside, I suspect it's way more central (I'm halfway through, it may still come)

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this thing uses error correction!

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