Huang Zongxi also made a parallel comparison between China and western mathematics. However, due to the limitations of the times, he thought that some conceptual methods in western mathematics were just stealing and modifying China's ancient arithmetic. The main achievement of Zhou Pian Suan Jing in mathematics is to introduce and prove Pythagorean theorem. Huang Zongxi believes that western geometry originated from Zhou's Pythagorean parallel computing theory.
Huang Zongxi also made some achievements in the concepts of finiteness and infinity. He corrected some mistakes in Zhu's Hu Shuo Numbers. This paper analyzes the difference between the abacus popular in Ming Dynasty and the calculator recorded in The Book of Numerology. He made a detailed mathematical analysis of the rural shooting system.
Parallel computation of weeks and:
The book "Zhou Bi suan Jing" was written in 1 century BC, which mainly expounded the theory of covering the sky and the method of four seasons calendar at that time. In the early Tang Dynasty, it was stipulated as one of imperial academy's teaching materials, so it was renamed Zhou Kuai.
Adopt the simplest and most feasible method to determine the astronomical calendar, and reveal the running laws of the sun, the moon and the stars, including the changes of seasons and climate, as well as the fact that the north and south poles are pushing day and night. It provides a powerful guarantee for the life and rest of the latecomers. Since then, mathematicians of all ages have been innovating and developing on the basis of the Classic of Weekly Parallel Computing.