Omar Khayyám (born 1048 AD, Neyshapur, Iran—1131 AD, Neyshapur, Iran), was a Persian polymath, mathematician, philosopher, astronomer, physician, and poet. He also wrote treatises on mechanics, geography, and music.
He has also become established as one of the major mathematicians and astronomers of the medieval period. Recognized as the author of the most important treatise on algebra before modern times as reflected in his Treatise on Demonstration of Problems of Algebra giving a geometric method for solving cubic equations by intersecting a hyperbola with a circle. He also contributed to the calendar reform and may have proposed a heliocentric theory well before Copernicus.
His significance as a philosopher and teacher, and his few remaining philosophical works, have not received the same attention as his scientific and poetic writings. Zamakhshari referred to him as “the philosopher of the world”. Many sources have also testified that he taught for decades the philosophy of Ibn Sina in Nishapur where Khayyám lived most of his life, breathed his last, and was buried and where his mausoleum remains today a masterpiece of Iranian architecture visited by many people every year.
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