Japanese mathematics

Japanese scholars adopted Western mathematical technique, and this led to a decline of interest in the ideas used in wasan.

[3] The Japanese mathematical schema evolved during a period when Japan's people were isolated from European influences, but instead borrowed from ancient mathematical texts written in China, including those from the Yuan dynasty and earlier.

[4][5] Yoshida was the author of the oldest extant Japanese mathematical text, the 1627 work called Jinkōki.

The work dealt with the subject of soroban arithmetic, including square and cube root operations.

[6] Yoshida's book significantly inspired a new generation of mathematicians, and redefined the Japanese perception of educational enlightenment, which was defined in the Seventeen Article Constitution as "the product of earnest meditation".

[8] Mathematicians like Takebe Katahiro played an important role in developing Enri (" circle principle"), an analog to the Western calculus.

[10] He also computed 41 digits of π, based on polygon approximation and Richardson extrapolation.

The soroban in Yoshida Koyu 's Jinkōki (1641 edition)
Replica of Katsuyo Sampo by Seki Takakazu. Page written about Bernoulli number and Binomial coefficient .