1, leonhard euler, Swiss mathematician and natural scientist. Born on April 5, 707 in/kloc-0, and died on September 8, 783 in/kloc-0. Among his achievements in mathematical research, analysis is the first. Euler sorted out the analysis contents of Leibniz school inherited by Bernoulli family, which laid the foundation for the development of mathematics in19th century. He also further developed the calculus method to the range of complex numbers in form, leaving pioneering achievements for the establishment and development of partial differential equations, elliptic function theory and variational methods.

2. Archimedes, an ancient Greek philosopher, mathematician and physicist, was born in 287 BC and died in 2 12 BC. Archimedes' mathematical achievement lies in that he not only inherited and carried forward the scientific method of studying abstract mathematics in ancient Greece, but also linked the research of mathematics with practical application.

3. Zu Chongzhi Wen Yuan was an outstanding mathematician and scientist in the Southern and Northern Dynasties. He was born in 429 AD and died in 500 AD. Zu Chongzhi calculated that the true value of π was between 3 14 15926 and 3 14 15927, which was equivalent to being accurate to the seventh place after the decimal point and simplified to 3 14 15926, which was the most advanced in the world at that time.