Yang Hui

Yang Hui (simplified Chinese: 杨辉; traditional Chinese: 楊輝; pinyin: Yáng Huī, ca. 1238–1298), courtesy name Qianguang (谦光), was a Chinese mathematician from Qiantang (modern Hangzhou), Zhejiang province during the late Song Dynasty (960-1279 AD). Yang worked on magic squares, magic circles and the binomial theorem, and is best known for his contribution of presenting 'Yang Hui's Triangle'. This triangle was the same as Pascal's Triangle, discovered by Yang's predecessor Jia Xian (贾宪). Yang was also a contemporary to the other famous mathematician Qin Jiushao.