263 CE
Chinese mathematician Liu Hui writes a commentary on The Nine Chapters on the Mathematical Art, describing what will later be called Gaussian elimination, computing pi, etc. King Odenathus of Palmyra declares himself ruler of the area west of the River Euphrates and is declared Dux Orientalis by the Roman emperor Gallienus. Conquest of Shu by Wei: The Chinese state of Cao Wei conquers Shu Han, one of its two rival states.
In the 260s, the 3rd century.
Geopolitics & Diplomacy
- King Odenathus of Palmyra declares himself ruler of the area west of the River Euphrates and is declared Dux Orientalis by the Roman emperor Gallienus.source
- Sima Zhao, regent of the Cao Wei state, receives and accepts the nine bestowments, state chancellorship, and the title Duke of Jin from Cao Huan.source
Conflict & Security
- Conquest of Shu by Wei: The Chinese state of Cao Wei conquers Shu Han, one of its two rival states.source
Culture & Society
- Chinese mathematician Liu Hui writes a commentary on The Nine Chapters on the Mathematical Art, describing what will later be called Gaussian elimination, computing pi, etc.source