Mathematician:Zu Chongzhi

Zu Chongzhi (simplified Chinese: 祖冲之; traditional Chinese: 祖冲之; pinyin: Zǔ Chōngzhī; Wade–Giles: Tsu Ch'ung-chih), courtesy name Wenyuan (文遠), was a prominent Chinese mathematician and astronomer.

Father of Zu Geng.

Deriving the most accurate approximation for $\pi$ for over nine hundred years.

Nationality
Chinese

History

 * Born: 429, Jiankang, (now Nanking, Kiangsu province), China
 * Died: 501, China

Theorems and Definitions

 * The Zu Chongzhi Fraction $\dfrac {355}{113}$ for pi.

Books and Papers

 * Zhui Shu (now lost)