Qin algorithm is a polynomial simplification algorithm proposed by Qin, a mathematician in the Southern Song Dynasty. It is called Horner algorithm in the west. Qin (about 1202- 126 1 year) was born in Lu Jun (now a native of Qufu, Shandong) at the end of the Southern Song Dynasty.
In his early years, he studied mathematics with a recluse gentleman. Later, because his father went to Sichuan to be an official, he moved with his father. He was also a native of Anyue, Zhou Pu (now Anyue County, Sichuan Province). Qin, Yang Hui and Zhu Shijie are also called the four great mathematicians in Song and Yuan Dynasties. (The Qin Memorial Hall in Anyue County officially started construction in September 2000, 1998, and was completed in February 2000. )
Shu Shu JIU Zhang
Shu Shu Jiu Zhang is a mathematical work written by Qin, a mathematician in the Southern Song Dynasty. The book * * * lists 8 1 questions, which are divided into 9 categories. This book is in the form of problem sets, without mathematical classification. Inscriptions not only talk about mathematics, but also involve natural phenomena and social life, which has become an important reference for understanding social politics and economic life at that time. This book is quite innovative in mathematics content, and it is the inheritance and development of Nine Chapters of Arithmetic. It summarizes the main achievements of mathematics in Song and Yuan Dynasties and marks the peak of ancient mathematics in China.
Written by Qin, a mathematician in China in the Southern Song Dynasty. Qin studied in Hangzhou in his early years, then studied mathematics from a hermit, and became an official in Hubei, Anhui and Jiangsu as an adult. 1244, due to the death of his mother, he went home to be filial and devoted himself to mathematics research. 1247 In September, he wrote "Introduction to Mathematical Technology", which was renamed as "Nine Chapters of Mathematical Books" at the end of Ming Dynasty. This is Qin's only mathematical work, but this alone makes him one of the outstanding mathematicians in the Song and Yuan Dynasties in China.