Li Ye
1192 CE–1279 CE · Daxing (Beijing), China
Li Ye, born Li Zhi, was a Chinese mathematician of the Jin and early Yuan period who developed the tian yuan shu ('coefficient array') method for setting up and solving polynomial equations. His 1248 work Ceyuan haijing applied this algebra to geometry problems built around a circle inscribed in a right triangle. He changed his given name from Zhi to Ye to avoid confusion with the Tang emperor Li Zhi; he is that mathematician, not the Tang-era namesake. He spent his last years teaching near Fenglong Mountain in Hebei.
Adapted from Wikipedia, licensed under CC BY-SA 4.0.
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Daxing (Beijing), China
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Thinkers, teachers, and rulers whose lives overlapped with Li Ye’s — a glimpse of the wider world they lived in. Drawn purely from recorded birth and death years.
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Rulers world
- al-Musta'sim· 1213 CE–1258 CE
- Möngke Khan· 1209 CE–1259 CE
- Al-Muazzam Turanshah· 1225 CE–1250 CE
- Hulagu Khan· 1217 CE–1265 CE
- Louis IX of France· 1214 CE–1270 CE
- Alexander Nevsky· 1221 CE–1263 CE
- As-Salih Ayyub· 1205 CE–1249 CE
- Qutuz· –1260 CE
- Dunama II Dibalemi (Mai Dunama Dabbalemi)· –1259 CE
- Tran Thai Tong· 1218 CE–1277 CE
- Frederick II (Holy Roman Emperor)· 1194 CE–1250 CE
- Sundiata Keita· –1255 CE
- Ghiyas ud-Din Balban· –1287 CE
- Michael VIII Palaiologos· 1223 CE–1282 CE
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