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This is kind of cool: the Cistercian numerals are a forgotten number system developed by the Cistercian monastic order in the early thirteenth century [1,2].

Interestingly, Cistercian numerals are much more compact than Arabic or Roman numerals; with a single character you could write any integer from 1 to 9999.

#math #numbersystems

References
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[1] "Cistercian numerals", https://en.wikipedia.org/wiki/Cistercian_numerals

[2] "The Forgotten Number System", https://www.youtube.com/watch?v=9p55Qgt7Ciw
This entry was edited (10 months ago)

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