all one's life

Born around 250 AD, Wei was an outstanding mathematician in ancient China and one of the founders of China's classical mathematical theory.

achievement

Liu Hui's mathematical achievements are roughly in two aspects:

First, clarify the ancient mathematical system of China and lay its theoretical foundation. This aspect is embodied in Nine Chapters of Arithmetic Notes. It has actually formed a relatively complete theoretical system:

(1) In number system theory

(2) In convex calculus theory.

③ In Pythagoras' theory.

④ In the area and volume theory.

Second, on the basis of inheritance, put forward your own ideas. This aspect is mainly reflected in the following representative innovations:

① Circumcision and Pi

② Liu Hui principle

③ the theory of "concerted housing reform"

④ New technology of equation

⑤ gravity difference operation.