Yuan Dynasty
"Si Yuan Jade Mirror" is one of the important works of mathematics in China's Yuan Dynasty, written by the mathematician Zhu Shijie. "Siyuan Yujian" is divided into the first volume, the first volume, the middle volume and the second volume, with 24 chapters, containing 288 questions, including 232 questions on Tianyuan art, 36 questions on Dual art, 13 questions on Sanyuan art, and 7 questions on Quanyuan art.
"Si Yuan Yu Jian" is the representative work of Zhu Shijie, an outstanding mathematician of the Yuan Dynasty. It is a masterpiece of mathematics with brilliant achievements. It has been highly praised by researchers in the history of modern mathematics and is considered to be the most important work on Chinese mathematics. An important work and one of the most outstanding mathematical works of the Middle Ages.
The "Four Yuan Jade Mirror" is divided into 3 volumes, 24 subjects, and 288 questions. All the questions in the book are related to solving equations or systems of equations. Among them, the four-yuan questions (requiring the establishment of four There are 7 questions for the unknown number), 13 questions for the three-dimensional one, 36 questions for the two-dimensional one, and 232 questions for the one-dimensional one. The beginning of the volume lists four types of five pictures, including Jia Xian's triangle, and gives examples of solutions to Tianyuan, Dual, Three-Yuan, and Four-Yuan techniques.