Wada Nei
Template:Short description Template:Family name hatnote
Script error: No such module "Nihongo"., also known as Wada Yasushi, was a Japanese mathematician in the Edo period. His birth name was Kōyama Naoaki; but he changed his name to Wada Nei, by which he became more widely known.[1]
Life and work
Wada studied under the patronage of the hereditary Script error: No such module "Nihongo".[2] in the court of the emperor.[3]
Wada became a student of Kusaka Sei, who had been a student of Ajima Chokuyen. Wada extended Ajima Chokuyen's development of an integral calculus within the Enri (Script error: No such module "Lang"., "circle principle") context. He worked on the computation of minimum and maximum values (roughly by equating the first derivative to 0) and gave reasoning and insight to the computation method that was given without explanation by Seki Takakazu about 100 years earlier. He was also the first Japanese mathematician to study roulettes.
Selected works
Wada's published writings are few.[4] Script error: No such module "Hatnote".
- Script error: No such module "Nihongo". OCLC 22035715224
See also
- Sangaku, the custom of presenting mathematical problems, carved in wood tablets, to the public in shinto shrines
- Soroban, a Japanese abacus
- Japanese mathematics
Notes
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- ↑ Smith, David. (1914). Template:Trim&pg=PA220 A History of Japanese Mathematics, pp. 220-229. , p. 220, at Google Books
- ↑ Titsingh, Isaac. (1834). Template:Trim&pg=PA427 Annales des empereur du japon, p. 427., p. 427, at Google Books
- ↑ Restivo, Sal P. (1992). Template:Trim&pg=PA59 Mathematics in Society and History: Sociological Inquiries, p. 59., p. 59, at Google Books
- ↑ WorldCat Identities: Wada Yasushi 和田寧 1787-1840
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References
- Endō Toshisada (1896). Script error: No such module "Nihongo".. Tōkyō: _____. OCLC 122770600
- Restivo, Sal P. (1992). Mathematics in Society and History: Sociological Inquiries. Dordrecht: Kluwer Academic Publishers. Template:ISBN; OCLC 25709270
- David Eugene Smith and Yoshio Mikami. (1914). A History of Japanese Mathematics. Chicago: Open Court Publishing. OCLC 1515528 -- note alternate online, full-text copy at archive.org
- Isaac Titsingh. (1834). Nihon Odai Ichiran; ou, Annales des empereurs du Japon. Paris: Royal Asiatic Society, Oriental Translation Fund of Great Britain and Ireland. OCLC 5850691