Omar Khayyam

Ghiyāth al-Dīn Abū al-Fatḥ ʿUmar ibn Ibrāhīm Nīsābūrī, commonly known as Omar Khayyam, was a Persian polymath, known for his contributions to mathematics, astronomy, philosophy, and poetry. He was born in Nishapur, the initial capital of the Seljuk Empire, and lived during the period of the Seljuk dynasty, around the time of the First Crusade. ^{Omar Khayyám, Persian mathematician, astronomer, and poet (d. 1131)}

18 May 1048

Born on the same birth day (18 May): Bill Everett • Brad Friedel • Brooks Robinson • Eric Gerets • Frank Capra • Ignasi Guardans • John Godber • Malcolm Longair • Marie-Ève Pelletier • Michael Cretu • Michaël Llodra • Philippe Benetton • Richard Clapton • Robert Morse • Walter Sisulu

Born in the same month (May 1048): Emperor Shenzong of Song