Shiraishi Nagatada

Shiraishi Nagatada ( Japanese 白石 長忠 ; * 1796 ; † 1862 ), or Shiraishi Chōchū (the Sino-Japanese reading of his name), was a Japanese mathematician of Wasan .

Shiraishi Nagatada was a samurai in the service of the Daimyō Shimizu, a relative of the Tokugawa Shoguns. In 1826 he published the mathematics book Shamei Sampu ( 社 盟 算 譜 ), which deals mainly with problems of the Enri ( 円 理 , German "circle principle"), which corresponds to the exhaustion method , but also contains a solution to the Diophantine equation . With Juri Mojinzo he wrote another work, which however was never printed. His students included Yokoyama, Baishu and Kimura Shōju ( 木村 尚 寿 ). ${\displaystyle x^{3}+y^{3}+z^{3}=n^{3}}$

literature

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

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