Fujita Sadasuke (藤田 定資, December 12, 1734 - September 9, 1807), also known as Honda Teiken,[1] was a Japanese mathematician in the Edo period.
[2] He is the author of Seiyō sampō (Essence of Mathematics) which was published in 1781.
[3] Sadasuke was the father of Fujita Kagen (1765–1821),[4] who is credited with publishing the first collection of sangaku problems.
[2] In a statistical overview derived from writings by and about Fujita Sadasuke, OCLC/WorldCat encompasses roughly 30 works in 30+ publications in 1 language and 30+ library holdings[5]
This Japanese history–related article is a stub.