Liu Hui (about 225-295), a native of Zouping, Binzhou, Shandong Province, was a great mathematician in Wei and Jin Dynasties and one of the founders of China's classical mathematical theory. He is a very great mathematician in the history of Chinese mathematics. His representative works "Nine Arithmetic Notes" and "Arithmetic on the Island" are China's most precious mathematical heritage.

Liu Hui has quick thinking and flexible methods. He advocates reasoning and intuition. He was the first person in China who explicitly advocated using logical reasoning to demonstrate mathematical propositions. Liu Hui's life is a life of hard exploration of mathematics. Although his position is low, his personality is noble. He is not a mediocre man who seeks fame and fame, but a great man who never tires of learning. He left us a valuable fortune.

Second, Zhu Shijie (a mathematician and educator in Yuan Dynasty)

Zhu Shijie (1249- 13 14), a native of Yanshan (present-day Beijing), was a mathematician and educator in the Yuan Dynasty, and engaged in mathematics education all his life. It has the reputation of "the greatest mathematician in the medieval world". Zhu Shijie developed the "Quaternary Technique" on the basis of celestial sphere technique at that time, that is, he listed the polynomial equation of higher degree and its elimination method.

In addition, he also created the "superposition method", that is, the summation method of high-order arithmetic progression, and the "trick", that is, the high-order interpolation method. His main works are "Arithmetic Enlightenment" and "Meeting with Siyuan".

Third, Yang Hui (a famous mathematician in Southern Song Dynasty)

Yang Hui (date of birth and death unknown), born in Qiantang (now Hangzhou, Zhejiang), Han nationality, was an outstanding mathematician and mathematics educator in the Southern Song Dynasty.

Life is unknown. He used to be a local administrative officer in the Southern Song Dynasty, and his footprints were all over Suzhou and Hangzhou. He has made great contributions to summarizing agile algorithms such as folk multiplication, division, "superposition", vertical and horizontal diagrams, and mathematics education. He is the first mathematician in the world to draw a rich vertical and horizontal map and discuss its composition law.

He also proved the sagittal formula, which was called "Shu Hui" at that time. Together with Qin, Zhu Shijie, they are called "the four great mathematicians of Song and Yuan Dynasties".

He has written five kinds of mathematical works, 2 1 volume, namely, Detailed Explanation of Algorithms in Chapter 9 12 (12 1), Everyday Algorithms 2 (1262) and Multiplication, Division and Change 3 (.

The latter three are collectively called Yang Hui algorithm. Korea, Japan and other countries have published translations and spread them all over the world.

Fourth, Li Rui (mathematician in Qing Dynasty)

Li Rui was a mathematician in China in the Qing Dynasty. The words are still there, and the number is four incense. Jiangsu Yuanhe (now Suzhou) was born. Qing Qianlong was born on December 8th, 13th year (1769 65438+ 10/5); Jiaqing died on June 30, 2002 (18 18 August 12). Mathematics and astronomy.

After studying in Qian Daxin, he went to Ruan Yuan shogunate to sort out mathematical classics. In fact, he presided over the compilation of the biography of the domain people. He has written Arithmetic Fine Grass, Pythagoras Arithmetic Fine Grass and Equation New Art Grass, and expounded the essence of ancient mathematics in China. He also annotated many calendars, conducted mathematical research, and wrote a textual research on the strength of Japan, France and Yu Shuo.

Five, Zhao Shuang (ancient mathematician)

Zhao Shuang, also known as Ying, is a mathematician in China. Wu people from the end of the Eastern Han Dynasty to the Three Kingdoms period. He is a famous mathematician and astronomer in the history of our country. Life span is unknown, about 182-250 years.

It is reported that he studied Zhang Heng's astronomical works Lingxian and Liu Hong's Dry Elephant Calendar, and also mentioned "arithmetic". His main contribution is a thorough study of Zhou Zhuan, the oldest astronomical work in China, which lasted about 222 years. In the early Tang Dynasty, it was renamed Zhou Chuan Shu Jing, and a preface was written with detailed comments.

This book concisely summarizes the profound principles of Pythagorean arithmetic in ancient China. Among them, there is an annotation of Pythagoras Square with more than 530 words, which is a very valuable document in the history of mathematics. He explained the Pythagorean theorem in detail in the Book of Changes, ·suan Jing, and expressed it as: "Pythagorean multiplication is a string reality. In addition to prescriptions, it is a string. " .

A new proof is given: "According to the chord diagram, Pythagoras can also be multiplied by Zhu Shi 2 and Zhu Shi 4, Pythagoras difference can be multiplied by the middle yellow real number, and the difference real number can be added to become the chord real number." . "You" and "Yi" mean that Zhao Shuang thinks Pythagorean theorem can be proved in another way.