Date of birth: 1633- 172 1.

Anhui Xuancheng people

Works: There are more than 88 kinds of self-compiled bibliographies of "Fei Ni An Li suan", among which mathematics accounts for 26 kinds. 1723 Compilation of Mathematical Essentials made by Emperor Kangxi, with volumes 39 and 40 as proportional solutions. Some methods of drawing sundial influenced the exploration of some later astronomical works and made them lost. 176 1 year, Mei Yucheng, the grandson of Mei Yucheng, edited 60 volumes of Mei Series and collected 40 volumes of mathematical works 13 kinds of * * *, which reflected the attitude of "learning from its strengths and reasoning" towards Chinese and western mathematics.

Life: At the end of Ming Dynasty, China was in the low tide of mathematics development. Although the original text has been translated, it is doubtful whether the academic circles can see its advantages. In fact, few people in Ming and Qing Dynasties made special research on the axiomatic method and logical deduction system of the original works. Since Xu Guangqi in the late Ming Dynasty, the representative figure in the field of mathematics is Mei Wending, who is familiar with Chinese and western mathematics and has made contributions to the development of traditional mathematics in China and the spread of western mathematics. Mei Wending's mathematical research covers all aspects of elementary mathematics, and he is a master of mathematics who connects the past with the future and integrates Chinese and Western in the transition period of traditional mathematics in China.

Source: mathematical historical allusions P 18 1, 374.

History of Chinese Mathematics P244,248,251-P244

Xirao Nian

Date of birth: 1678~ 1739

Jinzhou Liaoning

Works: Calculation of fesr, Outline of Trigonometry, Brief Introduction of Surface-to-Body Ratio. Vision is China's earliest work systematically expounding the principle of perspective, and it is the representative work of surface geometry in18th century. The revised version of Vision was published in 1735. Make the book richer in content and higher in standard. It is sixty or seventy years earlier than the book Geometry of Surfaces published by French mathematician gaspard monge in 1799. There are only two reprints of this book in China, but there is one copy in France and one in England.

Life: I met Italian Lang Shining, who knew the principle of perspective and learned the knowledge of perspective. I got a book about perspective from Lang Shining, which supplemented many tables. On this basis, I wrote a book about perspective. Not only have many perspective three-dimensional drawings been drawn by using the perspective principle, but also many plan drawings and their drawing methods have been put forward: two views and three views. Its surface methods include measuring point method, double measuring point method, intercept method and search method.

Source: Dictionary of Mathematicians (edited by Liu Zongqi)

Encyclopedia of China (edited by Jiang Zhuangfang) Ming Gatu

Date of birth: 1692~ 1763

Mongolia

Works: Collaborated with Mei Cheng and others to compile books such as Origin of Fa Li, Textual Research on Li Xiang and Textual Research on Yi Xiang. 1774, his disciple Chen compiled his draft secant circle density method into a book.

Life: He served as Qin Tianjian in Qing Dynasty, and made contributions to astronomical calendar and map mapping. He studied mathematics in the Qing court, and later with Mei Cheng and others, he compiled books such as The Origin of Law Calendar, Compilation of Calendar Images, and Examination of Instrument Images. He went to Xinjiang for surveying and mapping twice, summed up his research experience for more than 30 years in his later years, and wrote the Law of Cutting Circle and Density, which made an important study on power series, and was compiled into a book by disciple Chen in A.D. 1774.