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丁若鏞의 算書 勾股源流의 數學的 構造open accessMathematical Structures of JeongYag-yong’s Gugo Wonlyu
- Other Titles
- Mathematical Structures of JeongYag-yong’s Gugo Wonlyu
- Issue Date
- Dec-2015
- Publisher
- 한국수학사학회
- Keywords
- 丁若鏞(1762–1836); 勾股源 流; 三元多項式; 代數的構造; 順序構造; 사전식 순서.; Jeong Yag-yong; Gugo Wonlyu; polynomials of three indeterminates; algebraic structure; order structure; lexicographic order
- Citation
- 한국수학사학회지, v.28, no.6, pp 301 - 310
- Pages
- 10
- Journal Title
- 한국수학사학회지
- Volume
- 28
- Number
- 6
- Start Page
- 301
- End Page
- 310
- ISSN
- 1226-931X
- Abstract
- Since Jiuzhang Suanshu, the main tools in the theory of right triangles, known as Gougushu in East Asia were algebraic identities about three sides of a right triangle derived from the Pythagorean theorem. Using tianyuanshu up to siyuanshu, Song–Yuan mathematicians could skip over those identities in the theory. Chinese Mathematics in the 17–18th centuries were mainly concerned with the identities along with the western geometrical proofs. Jeong Yag-yong (1762–1836), a well known Joseon scholar and writer of the school of Silhak, noticed that those identitiescanbederivedthroughalgebraandthenwroteGugoWonlyu(勾股源流)inthe early 19th century. We show that Jeong reveals the algebraic structure of polynomials with the three indeterminates in the book along with their order structure. Althoughthetitlereferstorighttriangles,itisthefirstpurealgebrabookinJoseon mathematics, if not in East Asia.
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