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A mathematician of Jin Dynasty who contributed to celestial science.
Ye Li and Zhu Shijie were mathematicians in the Jin Dynasty, both of whom contributed to astronomy. Ye Li is the main contributor to the important achievements of ancient Tianyuan mathematics in China. 12 and 13 centuries, a systematic method for solving the unary equation finally appeared in the north of China, namely the famous Tianyuan. The word Tianyuan first appeared in Yi Gu Ji by Jiang Zhou, a mathematician in the Northern Song Dynasty.

Characteristics of celestial art

At that time, it was mainly used to improve the solving skills of equations, and it was also recorded in some books that quadratic equations were established by this method. Later, it was used to explore some characteristics of inscribed circle of right triangle, which played a key role in later mathematical research.

Astrology is a general method of using unknown equations, which is basically consistent with the method of equations in modern algebra. In ancient mathematics, equation and solution are two important interrelated problems. Astrology is a general method of using unknown equations, which is basically the same as the method of equations in modern algebra, but the writing is different.