Archivo: Yanghui triangle

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 en:Jia Xian 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).
Title: Yanghui triangle
Credit: w:en:Image:Yanghui_triangle.gif
Author: Yáng Huī (楊輝), ca. 1238–1298)
Permission: This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or less. You must also include a United States public domain tag to indicate why this work is in the public domain in the United States. This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.
Usage Terms: Public domain
License: Public domain
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