Years: 1045 1046 1047 - 1048 - 1049 1050 1051

Decades: 1010s 1020s 1030s - 1040s - 1050s 1060s 1070s

Centuries: 10th century - 11th century - 12th century

Events

• The city of Oslo is founded by Harald Hardråde of Norway.

Births

• May 18 - Omar Khayyam, Persian poet, astronomer, mathematician and philosopher (d. 1123)
• Alexius I Comnenus, Byzantine emperor (d. 1118)

Deaths

• August 9 - Pope Damasus II
• December 13 - Al-Biruni, Persian mathematician (b. 973)