Famous Deaths Dec 4 Omar Khayyám, Persian mathematician (cubic equations), astronomer (Jalali calendar, basis of the Persian calendar), poet (quatrains) and philosopher, dies at 83 1122 History by Year 1124 Famous Living People by Age 20-29 30-39 40-49 50-59 80-89 Over 90
20-29
30-39
40-49
50-59
80-89
Over 90