|Era||Islamic Golden Age|
|School||Persian mathematics, Persian poetry, Persian philosophy|
|Poetry, Mathematics, Islamic philosophy, Astronomy|
In mathematics he contributed to the theory of equations, to the understanding of the parallel axiom, and possibly to the generalization of the binomial theorem. As an astronomer he contributed to a calendar reform when Sultan Malik-Shah decided that the calendar needed some adjusting. He is best known for his agnostic and sceptic poetry, largely because of the publication in 1859 of Rubaiyat of Omar Khayyam by the translator Edward Fitzgerald.
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- Works by Omar Khayyám at Project Gutenberg
- The Persian Poet (http://www.omar-khayyam.org) - Contains the translations by Edward FitzGerald and a biography.
- The Rubaiyat
- On Omar's solutions to cubic equations
- Khayyam, Umar. A biography by Professor Iraj Bashiri, University of Minnesota.
- O'Connor, John J.; Robertson, Edmund F., "Omar Khayyám", MacTutor History of Mathematics archive, University of St Andrews.
- The Quatrains of Omar Khayyam