This extraordinary man, associated by tradition with Omar Khayyam, the well-known mathematician and free-thinking poet, and with Hassan (ibn) Sabbah, afterwards the founder of the sect of the Assassins (q.v.), was a renowned author and statesman of the first rank, and immortalized his name by the foundation of several universities (the Nizamiyah at Bagdad), observatories, mosques, hospitals and other institutions of public utility.
The Discovery Of The Period Of Thirty Three Years Is Ascribed To Omar Khayyam, One Of The Eight Astronomers Appointed Byjelal Ud Din Malik Shah, Sultan Of Khorasan, To Reform Or Construct A Calendar, About The Year 1079 Of Our Era.
The principal ranges of the Little Atlas - from west to east - are the Tlemcen (5500 ft.); the Warsenis (with Kef Sidi Omar, 650o ft.); the Titeri (4900 ft.); the Jurjura, with the peak of Lalla Kedija (7542 ft.) and Mount Babor (6447 ft.); and the Mejerda (3700 ft.), which extends into Tunisia.
His youngest son, Mahomed Omar Jan, was born in 1889 of an Afghan mother, connected by descent with the Barakzai family.
There are quatrains in the Rubdiyat of Omar Khayyam and pessimistic verses in Ecclesiastes which might have been uttered by Aristippus ("Then commended mirth, because a man hath no better thing than to eat and to drink and to be merry; for that shall abide with him of his labour the days of his life which God giveth him under the sun").