Born 1048 CE in Nishapur, Persia (today known as Iran) Omar Khayyam of Nishapur(Khayyam means "tent maker") . He was a Mathematician, Scientist, Astronomer, Philosopher & Poet. Khayam died in 1123 CE in Nishapur, Persia.
- Jalali Calendar (more accurate than the Julian, and almost as accurate as the Gregorian intercalation system)
-bullet Contributions to Algebra (geometric solution of cubic equations)
-bullet Astronomical tables
-bullet And the Rubaiyat vb