Zhu Shijie, courtesy name Hanqing, pseudonym Songting, was a Chinese mathematician and writer during the Yuan Dynasty. Zhu was born close to today's Beijing. Two of his mathematical works have survive

Yoshio Mikami was a Japanese mathematician and historian of Japanese mathematics. He was born February 16, 1875, in Kotachi, Hiroshima prefecture. He attended the High School of Tohoku University, and