Omar Khayyam Born

Omar Khayyam was born in 1048 in Nishapur, a major city in the northeastern Persian province of Khorasan. He became one of the most accomplished mathematicians and astronomers of the medieval Islamic world, and his name is also attached to a famous body of quatrains, the Rubaiyat. His career shows how closely science, patronage and literature were intertwined in eleventh-century Persia.

Khayyam was born into a Persia ruled by the Seljuk Turks, who were then extending their power across Iran and into Iraq and Anatolia. Nishapur was a prosperous center of learning, and the region had a strong tradition of mathematics, astronomy and philosophy built on Greek, Indian and earlier Islamic works. His name, often rendered as "tent maker," may reflect a family trade, though this is only a plausible inference. He is thought to have studied in Khorasan and later worked in Samarkand and Bukhara before gaining the favor of Seljuk rulers.

His scientific reputation rests chiefly on his work in algebra. In his treatise on algebra he gave a systematic classification of cubic equations and showed how to solve many of them geometrically, using the intersections of conic sections such as circles and parabolas. He did not have a general algebraic formula, which would come in Renaissance Italy, but his approach was a major step in treating equations as a unified subject. He also examined problems in Euclid's geometry, including the parallel postulate, in ways that later mathematicians found relevant to non-Euclidean geometry.

Around the 1070s, Khayyam was invited to the Seljuk court, where Sultan Malik-Shah supported a major astronomical project. Khayyam is traditionally credited with helping lead the effort to reform the calendar, resulting in what became known as the Jalali calendar. It was highly accurate for its time, and its structure of intercalation kept the solar year closely aligned with the seasons. Scholars debate the details of his personal role and the exact scheme used, but the calendar's quality is well established, and the Iranian solar calendar in use today descends from it.

The Rubaiyat is a more complicated legacy. Quatrains on themes of fleeting life, doubt and enjoyment of the moment circulated under his name, yet historians disagree about how many he actually wrote. Many were probably added by later poets, and the earliest manuscripts appear well after his death, which is usually placed around 1123 or 1131. Edward FitzGerald's free English translation of 1859 made the work wildly popular in the West and shaped Khayyam's image as a sensual skeptic.

In Persia he was long remembered primarily as a scholar. Today he is celebrated in both roles, as a mathematician who pushed algebra and geometry forward and as a literary figure whose reputation has crossed languages and centuries.