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File:Yanghui triangle.gif

Description Drawing of en:Pascal's Triangle published in 1303 by en:Zhu Shijie (1260-1320), in his Si Yuan Yu Jian. It was called Jia Xian triangle or Yanghui Triangle by the Chinese, after the mathematician and en:Yang Hui. The fourth entry from the left in the second row from the bottom appears to be a typo (34 instead of 35, correctly given in the fifth entry in the same row).
Date 1260-1320
Source
Author Yáng Huī (楊輝), ca. 1238–1298)
Permission
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