Shu Shu Jiu Zhang is a mathematical work written by Qin, a mathematician in the Southern Song Dynasty. Formerly known as "Mathematical Outline" or "Mathematical Outline" (9 volumes), it is divided into 9 categories, each of which is a volume. Shu Shu Jiu Zhang has 8 1 questions, which are divided into 9 categories with 9 questions in each category. Shu Shu Jiu Zhang, formerly known as Shu Shu Outline or Mathematics Outline (9 volumes), is divided into 9 categories, each of which is a volume.
In the Yuan Dynasty, it was renamed Nine Chapters of Mathematics, and its content was changed from 9 volumes to 18 volumes. The codex of the early Ming Dynasty was included in Yongle Dadian (1408), and another codex was kept in Wenyuan Museum. Scholars in Ming Dynasty called it Nine Chapters when copying, and Zhao Zailin, a scholar in late Ming Dynasty, used this name when copying. The form of codex spread to the Qing Dynasty, and was revised by Li Rui in 178 1 year, and then included in Sikuquanshu.
The influence of later generations
Shu Shu Jiu Zhang has many innovations in mathematical content. China's counting method and its formula are completely preserved here; Natural numbers, fractions, decimals and negative numbers are all discussed in special articles, and decimals are used to represent the approximation of irrational roots for the first time. 1 Volume uses the greatest common divisor and the least common multiple flexibly, and creates a series equation to find the least common multiple of several numbers.
On the basis of the problem of "things don't know the number" in Sun Tzu's Mathematical Classics, this paper summarizes the skills of solving a congruence group by big deduction, which makes the solution of a congruence group standardized and programmed, more than 500 years earlier than the similar method pioneered by Gauss in the west, and is recognized as "China's remainder theorem".