Liu Hui, wei ren (born around 250 AD) in the late Three Kingdoms period, was an outstanding mathematician in ancient China and one of the founders of China's classical mathematical theory. History books rarely record his birth, death and life story. According to limited historical data, he was from Zouping, Shandong Province in Wei and Jin Dynasties. Never been an official. Liu Hui's mathematical works are rarely passed down to later generations, and what remains is copied over and over again. His main works are: Nine Chapters of Arithmetic Notes (volume 10); In the Tang Dynasty, 1 was renamed as "island calculation"; "Nine Chapters Heavy Difference Map" L volume, but unfortunately the last two were lost in the Song Dynasty.

Zu Chongzhi,

Zu Chongzhi (AD 429-AD 500) was an outstanding mathematician and scientist in China. People in the Southern and Northern Dynasties, Han people, the word Wen Yuan. Born in Yuanjia for six years, he died in Hou Yongyuan and Qi Hun for two years. His ancestral home is Qiu County, Fanyang County (now Laishui County, Hebei Province). In order to escape the war, Zu Chongzhi's grandfather, Zuchang, moved from Hebei to Jiangnan. Zuchang was once a "great craftsman" in Liu Song, in charge of civil engineering; Zu Chongzhi's father is also a DPRK official. Zu Chongzhi received scientific knowledge from his family since childhood. When I was young, I entered Hualin University and engaged in academic activities. Throughout his life, he served as an official in South Xuzhou (now Zhenjiang City), such as Shi and Fu joining the army, Lou County Order (now northeast Kunshan City), Servant Shooter and Changshui Captain. Its main contributions are in mathematics, astronomical calendar and machinery.

Descartes

Descartes rene descartes,1March 3, 596, was born in Dulan, France. Descartes was a great philosopher, physicist, mathematician and physiologist. The founder of analytic geometry. Descartes was one of the founders of modern European bourgeois philosophy, and Hegel called him "the father of modern philosophy". He formed his own system and combined materialism and idealism, which had a far-reaching influence in the history of philosophy. At the same time, he is a scientist who dares to explore, and his analytic geometry is of epoch-making significance in the history of mathematics. Descartes is one of the most influential masters in the field of philosophy and science in Europe in the17th century, and is known as "the ancestor of modern science".