Tian yuan shu
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Tian yuan shu is a Chinese system of algebra for polynomial equations. Some of the earliest existing writings were created in the 13th century during the Yuan dynasty. However, the tianyuanshu method
Tian yuan shu in Zhu Shijie's text Suanxue qimeng
The technique described in Alexander Wylie's Jottings on the Science of the Chinese
Zhu Shijie
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Zhu Shijie, courtesy name Hanqing, pseudonym Songting, was a Chinese mathematician and writer during the Yuan Dynasty. Zhu was born close to today's Beijing. Two of his mathematical works have survive
A page of Zhu Shijie's famous Jade Mirror of the Four Unknowns
Suanxue Qimeng
Illustrations in Jade Mirror of the Four Unknowns