, also known as Yoshida Kōyū, was a Japanese

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematica ...

in the

Edo period The , also known as the , is the period between 1600 or 1603 and 1868 in the history of Japan, when the country was under the rule of the Tokugawa shogunate and some 300 regional ''daimyo'', or feudal lords. Emerging from the chaos of the Sengok ...

. List of Japanese mathematicians
--

Clark University Clark University is a private research university in Worcester, Massachusetts, United States. Founded in 1887 with a large endowment from its namesake Jonas Gilman Clark, a prominent businessman, Clark was one of the first modern research uni ...

,
Dept. of Mathematics and Computer Science
His popular and widely disseminated published work made him the most well known writer about mathematics in his lifetime. He was a student of Kambei Mori (also known as Mōri Shigeyoshi). Along with

Imamura Chishō Imamura (, ''kanji'' characters for "now" and "village") is a Japanese surname. Notable people with the surname include: *, Japanese seismology, seismologist *Ayaka Imamura (born 1993), Japanese voice actress *Fumihiko Imamura (born 1961), Japanese ...

and

Takahara Kisshu Takahara (written: 高原 or 髙原) is a Japanese surname. Notable people with the surname include: *, Japanese footballer *, Japanese billionaire *, Japanese footballer *, Japanese racing driver *, Japanese martial artist *, Japanese economist an ...

, Yoshida became known to his contemporaries as one of "the Three Arithmeticians." Yoshida was the author of the oldest extant Japanese mathematical text. The 1627 work was named '' Jinkōki''. The work dealt with the subject of

soroban The is an abacus developed in Japan. It is derived from the History of Science and Technology in China, ancient Chinese suanpan, imported to Japan in the 14th century. Like the suanpan, the soroban is still used today, despite the proliferation ...

arithmetic Arithmetic is an elementary branch of mathematics that deals with numerical operations like addition, subtraction, multiplication, and division. In a wider sense, it also includes exponentiation, extraction of roots, and taking logarithms. ...

, including square and cube root operations.

Selected works

In a statistical overview derived from writings by and about Yoshida Mitsuyoshi,

OCLC OCLC, Inc. See also: is an American nonprofit cooperative organization "that provides shared technology services, original research, and community programs for its membership and the library community at large". It was founded in 1967 as the ...

WorldCat WorldCat is a union catalog that itemizes the collections of tens of thousands of institutions (mostly libraries), in many countries, that are current or past members of the OCLC global cooperative. It is operated by OCLC, Inc. Many of the O ...

encompasses roughly 20+ works in 30+ publications in 1 language and 40+ library holdings. WorldCat Identities 吉田光由 1598-1672
/ref> * 1643 —
OCLC 22023455088
* 1659 —
OCLC 22057549632
* 1818 —
OCLC 22057124215
* 1850 —
OCLC 22055982082

Notes

References

* Endō Toshisada (1896). . Tōkyō: _____
OCLC 122770600
* Horiuchi, Annick. (1994)
''Les Mathematiques Japonaises a L'Epoque d'Edo (1600–1868): Une Etude des Travaux de Seki Takakazu (?-1708) et de Takebe Katahiro (1664–1739).''
Paris: Librairie Philosophique J. Vrin.
OCLC 318334322
* Restivo, Sal P. (1992)
''Mathematics in Society and History: Sociological Inquiries.''
Dordrecht: Kluwer Academic Publishers.
OCLC 25709270
*

David Eugene Smith David Eugene Smith (January 21, 1860 – July 29, 1944) was an American mathematician, educator, and editor. Education and career David Eugene Smith is considered one of the founders of the field of mathematics education. Smith was born in Cort ...

and

Yoshio Mikami was a Japanese mathematician and historian of ''Japanese mathematics''. He was born February 16, 1875, in Kotachi, Hiroshima prefecture. He attended the High School of Tohoku University, and in 1911 was admitted to the Imperial University of Tok ...

. (1914)
''A History of Japanese Mathematics.''
Chicago: Open Court Publishing
OCLC 1515528-- note alternate online, full-text copy at archive.org

External links

{{DEFAULTSORT:Yoshida, Mitsuyoshi 17th-century Japanese mathematicians 1598 births 1672 deaths Writers of the Edo period