The book Ceyuan Haijingstudies inscribed and circumscribed circles in a right triangle and shows equations that give the diameters of the circles. We discuss the development of mathematical contents written by the scholar Yang Zhaoyun...
The Siyuan yujian shares the same basic features with the first book that has come down to us on this topic, Li Ye 李冶's (or Li Zhi 李治's, according to the name chosen for this scholar) Ceyuan haijing 測圓海鏡 (Sea ...