Arima Yoriyuki

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Arima Yoriyuki

Script error: No such module "Nihongo". was a Japanese mathematician of the Edo period. He was the lord of Kurume Domain.

He approximated the value of π and its square, π2. In 1766, he found the following rational approximation of π, correct to 29 digits:[1][2]

π428224593349304136308121570117=3.14159265358979323846264338327(569...).

References

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Further reading

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