Omar Khayyam aka Abu’lFath Omar ibn Ibrāhīm al-Khayyām, a Persian mathematician, astronomer, andpoet, would have been 971 years today. And Google is celebrating this day witha doodle. Khayyam was born on 18 May 1048, in Iran’s Nishapur.


Khayyam left apermanent mark in three fields. In astronomy, he gave us the Jalali calendar, asolar calendar with a very defined 33-year intercalation cycle. While we don'tuse the Jalali calendar anymore, it became the base of some other calendars.


In the field of mathematicstoo, he is known for his work on the classification and solution of cubicequations. He was the first to give a common method for solving cubicequations. Besides that, Khayyam also added to the functions of a parallelaxiom. He wrote the ‘Treatise on Demonstration of Problems of Algebra’. He evendiscovered a triangular array of binomial theorem the nth root of naturalnumbers, but the work on this have been lost.


The world of literaturealso saw some great influence from Omar Khayyam. He wrote over a 1000 verses,and the famous ‘Rubáiyát of Omar Khayyám’ is a section of his verses that weretranslated by Edward Fitzgerald. Unfortunately, though, Khayyam's work becamefamous in the West hundreds of year after his death. He also wrote a book onmusic and algebra.


Khayyam also worked asan advice-giver and court astrologer to Malik Shah I in Khorasan province

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