Arima Yoriyuki

Template:Japanese name 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 $\pi$ and its square, $\pi ^{2}$ . In 1766, he found the following rational approximation of pi, correct to 29 digits:^[1]^[2]

\pi \approx {\frac {428224593349304}{136308121570117}}=3.14159265358979323846264338327(569...)

References

^ "Collection of approximations for $\pi$ ". Retrieved 2008-04-04.
^ Hardy, G. H.; E. M. Wright (1978). An Introduction to the Theory of Numbers. Oxford Science Publications.

This article about a Japanese scientist is a stub. You can help Wikipedia by expanding it.

This article about an Asian mathematician is a stub. You can help Wikipedia by expanding it.

[1] "Collection of approximations for $\pi$ ". Retrieved 2008-04-04.

[2] Hardy, G. H.; E. M. Wright (1978). An Introduction to the Theory of Numbers. Oxford Science Publications.

[1]

[2]