1238 – Yang Hui – bio

Yang Hui was born in Zhejiang province in China in 1238 during the Song Dynasty and was a mathematician who was associated with a triangular array of numbers very similar to Pascals triangle. Just as Pascal did not invent the triangle, Yang Hui seems to have inherited the knowledge of the numbers from Jia Xian, whose original work on the subject was lost. Yang wrote an analysis of a handbook of mathematics which contained notes by Jia Xian.

Jia Xian

Qin Jiushao


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