Kambei Mori[1] or Mōri Kambei (毛利 勘兵衛),[2] also known as Mōri Kambei Shigeyoshi[3] Mōri Shigeyoshi (毛利 重能),[4] was a Japanese mathematician in the Edo period.
[5] Some 16th-century sources suggest that Mori studied in China, but such claims are inconclusive or rejected by historians.
[6] What is known with certainty is that he started a school in Kyoto and he wrote several influential and widely discussed books which dealt with arithmetic and the use of the abacus.
[7] One of his students was Yoshida Mitsuyoshi, the author of Jinkōki, which is the oldest extant Japanese mathematical text.
[8] In a statistical overview derived from writings by and about Kambei Mori, OCLC/WorldCat encompasses 2 works in 3 publications in 1 language and 5 library holdings.