Arima Yoriyuki
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In this Japanese name, the family name is "Arima".
Arima Yoriyuki (有馬 頼徸, December 31, 1714 – December 16, 1783) was a Japanese mathematician of the Edo period. He was the lord of Kurume Domain and approximated the value of π and its square, π2. In 1766, he found the following rational approximation of pi, correct to 29 digits:[1][2]
[edit] References
- ^ "Collection of approximations for π". http://numbers.computation.free.fr/Constants/Pi/piApprox.html. Retrieved 2008-04-04.
- ^ Hardy, G. H.; E. M. Wright (1978). An Introduction to the Theory of Numbers. Oxford Science Publications.
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