Mathematician:Chia Hsien

Mathematician
Chia Hsien or Jia Xian (贾宪) was a Chinese mathematician best known for discussing Pascal's Triangle about 500 years before.

Nationality
Chinese

History

 * Born: c. 1010, China
 * Died: c. 1070, China

Theorems and Definitions

 * Pascal's Triangle

Writings

 * Huangdi Jiuzhang Suanjing Xicao (The Yellow Emperor's detailed solutions to the Nine Chapters on the Mathematical Art)
 * Suanfa Xuegu Ji (A collection of ancient mathematical rules)

Both are now lost, but the first is referred to extensively in 's Xiangjie Jiuzhang Suanfa.