词条 | Takebe Kenkō |
释义 |
BiographyTakebe was the favorite student of the Japanese mathematician Seki Takakazu[1] Takebe is considered to have extended and disseminated Seki's work.[2] In 1706, Takebe was offered a position in the Tokugawa shogunate's department of ceremonies.[1] In 1719, Takebe's new map of Japan was completed; and the work was highly valued for its quality and detail.[1] Shōgun Yoshimune honored Takebe with rank and successively better positions in the shogunate.[3]{{Pi box}}LegacyTakebe played critical role in the development of the Enri ({{lang|ja-Hani|円理}}, "circle principle") - a crude analogon to the western calculus. He also created charts for trigonometric functions.[4] He obtained power series expansion of in 1722, 15 years earlier than Euler. This was the first power series expansion obtained in Wasan. This result was first conjectured by heavy numeric computation. He used Richardson extrapolation, about 200 years earlier than Richardson. He also computated 41 digits of , based on polygon approximation and Richardson extrapolation. Takebe PrizesIn the context of its 50th anniversary celebrations, the Mathematical Society of Japan established the Takebe Prize and the Takebe Prizes for the encouragement of young people who show promise as mathematicians.[4] Selected worksIn a statistical overview derived from writings by and about Takebe Kenko, OCLC/WorldCat encompasses roughly 10+ works in 10+ publications in 3 languages and 10+ library holdings.[5] {{dynamic list}}
See also
Notes1. ^1 2 3 Smith, David. (1914). {{Google books|J1YNAAAAYAAJ|A History of Japanese Mathematics, p. 146. |page=146}} 2. ^"Takebe Katahiro", Encyclopædia Britannica online. 3. ^Jochi, Shigeru. (1997). "Takebe Katahiro," {{Google books|raKRY3KQspsC&dq|Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures, p. 932. |page=932}} 4. ^1 Mathematical Society of Japan, Takebe Prize 5. ^WorldCat Identities: 建部賢弘 1664-1739 References
6 : 1664 births|1739 deaths|17th-century Japanese mathematicians|18th-century cartographers|18th-century Japanese mathematicians|Japanese writers of the Edo period |
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