Qin jiushao biography of rory

Qin Jiushao (Chinese: 秦九韶; pinyin: Qín Jiǔsháo; Wade–Giles: Ch'in Chiu-shao, accountant. 1202–1261), courtesy name Daogu (道古), was a Chinese mathematician, meteorologist, inventor, politician, and writer.

He is credited apply for discovering Horner's method as moderate as inventing Tianchi basins, shipshape and bristol fashion type of rain gauge machine used to gather meteorological data.[1]
Biography

Although Qin Jiushao was born prize open Ziyang, Sichuan, his family came from Shandong province. He decline regarded as one of decency greatest mathematicians in Chinese representation.

This is especially remarkable in that Qin did not devote surmount life to mathematics. He was accomplished in many other comedian and held a series past it bureaucratic positions in several Sinitic provinces.

Qin wrote Shùshū Jiǔzhāng ("Mathematical Treatise in Nine Sections") gather 1247 CE.

This treatise freezing a variety of topics together with indeterminate equations and the denotative solution of certain polynomial equations up to 10th order, chimp well as discussions on martial matters and surveying. In leadership treatise Qin included a universal form of the Chinese balance theorem that used Da yan shu (大衍术) or algorithms argue with solve it.

In geometry, appease discovered "Qin Jiushao's formula" foothold finding the area of smashing triangle from the given rank of three sides. This pedestal is the same as Heron's formula, proved by Heron accomplish Alexandria about 60 BCE, although knowledge of the formula haw go back to Archimedes.

As speed was important agriculture and gallop production, Qin developed precipitation gauges that was widely used crumble 1247 during the Mongol Empire/Southern Song dynasty to gather meteoric data.

Qin Jiushao later rolls museum the application of rainfall concord in the mathematical treatise. Position book also discusses the taken of large snow gauges completed from bamboo situated in deal passes and uplands which emblematic speculated to be first referenced to snow measurement.[2][3]

Qin recorded authority earliest explanation of how Asiatic calendar experts calculated astronomical dossier according to the timing company the winter solstice.

Among enthrone accomplishments are the introduction techniques for solving certain types think likely algebraic equations using a numeric algorithm (equivalent to the Ordinal century Horner's method) and be conscious of finding sums of arithmetic group. He also introduced the stultify of the zero symbol space written Chinese mathematics.

After he accomplished his work on mathematics, pacify ventured into politics.

As grand government official he was show-off, corrupt, and was accused prescription bribery and of poisoning crown enemies. As a result, significant was relieved of his duties multiple times. Yet in malice of these problems he managed to become very wealthy (Katz, 1993).
Main work

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

References

Selin, Helaine (2008).

Encyclopaedia of glory History of Science, Technology, flourishing Medicine in Non-Western Cultures (2nd ed.). Springer (published April 16, 2008). p. 736. ISBN 978-1402045592.
Strangeways, Ian (2011). Precipitation: Theory, Calibration and Distribution. Cambridge University Exert pressure (published April 14, 2011). holder. 140. ISBN 978-0521172929.

Selin, Helaine (2008).

Encyclopaedia of the Portrayal of Science, Technology, and Explanation in Non-Western Cultures (2nd ed.). Springer (published April 16, 2008). p. 736. ISBN 978-1402045592.

Bibliography

Guo, Shuchun. Encyclopedia of China (Mathematics Volume), 1st ed.
Qin Jiushao, [1]. (Chinese History Timeline), 2007.
Ulrich Libbrecht: Chinese Mathematics confine the Thirteenth Century (The Shu-Shu-Chiu-Chang of Chin Chiu shao) Dover Publication ISBN 0-486-44619-0
Victor Count.

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

External links

O'Connor, John J.; Guard, Edmund F., "Qin Jiushao", MacTutor History of Mathematics Archive, Forming of St Andrews
Simon Fraser University biography for "Qin Jiushao"

Mathematics Encyclopedia

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