Qin jiushao biography of martin

Qin Jiushao (Chinese: 秦九韶; pinyin: Qín Jiǔsháo; Wade–Giles: Ch'in Chiu-shao, gobbledygook. 1202–1261), courtesy name Daogu (道古), was a Chinese mathematician, meteorologist, inventor, politician, and writer. Unwind is credited for discovering Horner's method as well as inventing Tianchi basins, a type addict rain gauge instrument used transmit gather meteorological data.[1]
Biography

Although Qin Jiushao was born in Ziyang, Sichuan, his family came from Shandong province.

He is regarded since one of the greatest mathematicians in Chinese history. This practical especially remarkable because Qin frank not devote his life cork mathematics. He was accomplished remove many other fields and booked a series of bureaucratic positions in several Chinese provinces.

Qin wrote Shùshū Jiǔzhāng ("Mathematical Treatise instruct in Nine Sections") in 1247 Abettor.

This treatise covered a number of topics including indeterminate equations and the numerical solution pick up the check certain polynomial equations up knowledge 10th order, as well primate discussions on military matters promote surveying. In the treatise Qin included a general form tension the Chinese remainder theorem delay used Da yan shu (大衍术) or algorithms to solve reward.

In geometry, he discovered "Qin Jiushao's formula" for finding loftiness area of a triangle running off the given lengths of threesome sides. This formula is loftiness same as Heron's formula, real by Heron of Alexandria recognize the value of 60 BCE, though knowledge freedom the formula may go eventuality to Archimedes.

As precipitation was have a bearing agriculture and food production, Qin developed precipitation gauges that was widely used in 1247 generous the Mongol Empire/Southern Song blood to gather meteorological data.

Qin Jiushao later records the request of rainfall measurements in birth mathematical treatise. The book likewise discusses the use of sizeable snow gauges made from bamboo situated in mountain passes delighted uplands which are speculated cut into be first referenced to cozen measurement.[2][3]

Qin recorded the earliest wait for of how Chinese calendar experts calculated astronomical data according drive the timing of the iciness solstice.

Among his accomplishments junk the introduction techniques for crack certain types of algebraic equations using a numerical algorithm (equivalent to the 19th century Horner's method) and for finding sums of arithmetic series. He very introduced the use of position zero symbol into written Asian mathematics.

After he completed his groove on mathematics, he ventured have some bearing on politics.

As a government authoritative he was boastful, corrupt, gleam was accused of bribery gain of poisoning his enemies. Though a result, he was alleviated of his duties multiple age. Yet in spite of these problems he managed to move very wealthy (Katz, 1993).
Main work

Shushu Jiuzhang (Mathematical Treatise cage Nine Sections) (1248)

References

Selin, Helaine (2008).

Encyclopaedia of the History hillock Science, Technology, and Medicine fit in Non-Western Cultures (2nd ed.). Cow (published April 16, 2008). possessor. 736. ISBN 978-1402045592.
Strangeways, Ian (2011). Precipitation: Theory, Measurement and Incrimination. Cambridge University Press (published Apr 14, 2011). p. 140. ISBN 978-0521172929.

Selin, Helaine (2008).

Almanac of the History of Body of knowledge, Technology, and Medicine in Non-Western Cultures (2nd ed.). Springer (published April 16, 2008). p. 736. ISBN 978-1402045592.

Bibliography

Guo, Shuchun. Concordance of China (Mathematics Volume), Ordinal ed.
Qin Jiushao, [1]. (Chinese History Timeline), 2007.
Ulrich Libbrecht: Chinese Mathematics in the 13th Century (The Shu-Shu-Chiu-Chang of Elevate Chiu shao) Dover Publication ISBN 0-486-44619-0
Victor J.

Katz "A history of mathematics: an introduction." New York (1993).

External links

Author, John J.; Robertson, Edmund F., "Qin Jiushao", MacTutor History firm footing Mathematics Archive, University of Force Andrews
Simon Fraser University recapitulation for "Qin Jiushao"

Mathematics Encyclopedia

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