刘徽(生于公元250年左右),是中国数学史上一个非常伟大的数学家,在世界数学史上,也占有杰出的地位。他的杰作《九章算术注》和《海岛算经》,是我国最宝贵的数学遗产。贾宪,中国古代北宋时期杰出的数学家。曾撰写的《黄帝九章算法细草》(九卷)和《算法斆古集》(二卷),均已失传。他的主要贡献是创造了“贾宪三角‘和增乘开方法,增 Liu Hui (born about 250 AD) is a very great mathematician in the history of mathematics in China and also holds an outstanding position in the history of mathematics in the world. His masterpiece, ”Chapter Nine Arithmetic Note“ and ”Island Countdown,“ is China’s most valuable mathematical legacy. Jia Xian, an outstanding mathematician in ancient China during the Northern Song Dynasty. Has written ”Yellow Emperor nine chapters algorithm fine grass“ (nine volumes) and ”algorithm 斆 ancient set“ (two volumes), have been lost. His main contribution is to create ”Jiaxian Triangle" and increase multiplication methods