Mōri Shigeyoshi

Mōri Shigeyoshi ( Japanese 毛利 重 能 , date of birth and death unknown) was a Japanese mathematician of the early Edo period . His nickname was Kambei ( 勘 兵衛 , Kambē ).

Mōri was originally a samurai in the service of Toyotomi Hideyoshis , later he received the honorary rank of provincial governor of Dewa ( 出 羽 守 , Dewa no Kami ). In his youth he was the study of arithmetic in the China of the Ming dynasty gone. In the Osaka army camp he maintained friendly relations with the Mōri Katsunaga , who also belonged to the Mōri family and whose unit he was subordinate to.

The "writing about the division" ( 割 算 書 , Warizan-sho ; so the common name), written by him and published in 1622, applies together with the "notes for the use of arithmetic" ( 算 用 記 , San'yō-ki ) as important Wasan script , representative of the early Edo period . In the colophon of Warizan sho stated: "From Iraka-bayashi in county Muko the province of Settsu after Kyoto moved and [there] resident, opened a school ( juku ) with the name far and wide number one [in the] division calculation '( 割 算 の 天下 一 Warizan tenka ichi , or according to the notice board "in the instruction in the division" 割 算 天下 一 指南 Warizan tenka ichi shinan ) ". Mōri trained later outstanding Wasan scholars, among them Yoshida Mitsuyoshi , Imamura Tomoaki and Takahara Yoshitane , who had previously studied with Seki Takakazu . Mōri's master students Yoshida, Imamura and Takahara are usually referred to as the "Three Sons of Mōri" ( 毛利 の 三 子 , Mōri no Sanshi ).

In 1972, a memorial stone was placed in the Kumano Shrine , at the side of which the Sangaku Shrine ( 算 学 神社 , Sangaku-jinja ; literally: "Shrine of arithmetic") was built.

literature

• David Eugene Smith , Mikami Yoshio : A History of Japanese Mathematics . Open Court Publishing, Chicago 1914 ( full online version at archive.org )

Individual evidence

1. ↑ Annick Horiuchi: les mathématiques japonaises à l'époque d'Edo . J. Vrin, 1994, ISBN 2-7116-1213-9 , ISSN  1147-4920 , pp. 30 ( limited preview in Google Book search).

See also

• Soroban

Japanese name: As is common in Japan, the family name comes before the first name in this article . Thus Mōri is the family name, Shigeyoshi the first name.