Jack Yung Chang

Jack Yung Chang (Chinese: 章用; pinyin: Zhāng Yòng; Wade–Giles: Chang Yung; 9 March 1911 – 16 December 1939), courtesy name Junzhi (Chinese: 俊之; pinyin: Jùnzhī; Wade–Giles: Chün-chih), was a Chinese historian of mathematics. His most significant work was on calendar systems in Asia.

Jack Yung Chang

Jack Yung Chang (Chinese: 章用; pinyin: Zhāng Yòng; Wade–Giles: Chang Yung; 9 March 1911 – 16 December 1939), courtesy name Junzhi (Chinese: 俊之; pinyin: Jùnzhī; Wade–Giles: Chün-chih), was a Chinese historian of mathematics. His most significant work was on calendar systems in Asia.