Zhu Shijie
mathematician of Yuan dynasty (during the reign of Temür Khan), inventor of Chinese quaternion, Si yuan shu (四元術) and stacking technique Duo ji shu (垛積術)
Birth
January 1, 1249
Beijing, People's Republic of China
Death
January 1, 1314
Other Names
Chu Shih-chieh, Zhu, Songting, Zhu, Hanqinq, Songting, Hanqing
