Mathematicians
Qin Jiushao
chin jee-oh-SHOW
Also Known As Ch'in Chiu-shao (Wade-Giles romanization); courtesy name Daogu
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Qin Jiushao was a Chinese mathematician who developed the Da yan shu, a complete general algorithm for solving the system of simultaneous congruences known today as the Chinese remainder theorem, publishing it in his 1247 treatise Mathematical Treatise in Nine Sections.
Facts
BirthplaceSichuan province, China (exact locality disputed: Wikipedia gives Ziyang, MacTutor gives Puzhou/Anyue) 1 Two reputable sources disagree on the exact locality within Sichuan; both agree on the province and circa 1202. Death PlaceMeizhou (now Meixian), Guangdong, China 1 Nationality / Culture Defining ContributionQin Jiushao provided the general solution now called the Chinese remainder theorem in his 1247 treatise, extending a special case first recorded centuries earlier in the Sunzi Suanjing. 2 Notable WorkWrote the Shushu Jiuzhang (Mathematical Treatise in Nine Sections, 1247), containing the Chinese remainder theorem and a Horner-like method for solving polynomial equations. 1 Disputed
Birth YearSources give the birth year only approximately, circa 1202. Cross-Tradition Connections
Sources
1. Qin Jiushao (Wikipedia)
Wikimedia Foundationlead paragraph and history sectionQuote, lead paragraph and history section
He is credited for discovering Horner's method
1. Qin Jiushao (Wikipedia)
Wikimedia FoundationinfoboxQuote, infobox
Chinese mathematician
1. Qin Jiushao (Wikipedia)
Wikimedia Foundationbiographical summaryQuote, biographical summary
was a Chinese mathematician, meteorologist, inventor, politician, and writer of the Southern Song dynasty.
1. Qin Jiushao (Wikipedia)
Wikimedia Foundationworks descriptionQuote, works description
Qin wrote Shushu Jiuzhang (Mathematical Treatise in Nine Sections) in 1247 CE. This treatise covered a variety of topics including indeterminate equations, and the numerical solution of certain polynomial equations up to the tenth degree.
1. Qin Jiushao (Wikipedia)
Wikimedia Foundationinfobox pinyin fieldQuote, infobox pinyin field
Qin Jiushao
2. Chinese Remainder Theorem (Wikipedia)
Wikimedia FoundationHistory sectionQuote, History section
Qin Jiushao provided a complete general solution in his 1247 work Mathematical Treatise in Nine Sections
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