Omar Khayyam
Ghiyāth al-Dīn Abū al-Fatḥ ʿUmar ibn Ibrāhīm Nīsābūrī (18 May 1048 – 4 December 1131), commonly known as Omar Khayyam (),; }} was a Persian polymath, known for his contributions to mathematics, astronomy, philosophy, and poetry. He was born in Nishapur, the initial capital of the Seljuk Empire, and lived during the period of the Seljuk dynasty, around the time of the First Crusade.As a mathematician, he is most notable for his work on the classification and solution of cubic equations, where he provided a geometric formulation based on the intersection of conics. He also contributed to a deeper understanding of Euclid's parallel axiom. As an astronomer, he calculated the duration of the solar year with remarkable precision and accuracy, and designed the Jalali calendar, a solar calendar with a very precise 33-year intercalation cycle }} which provided the basis for the Persian calendar that is still in use after nearly a millennium.
There is a tradition of attributing poetry to Omar Khayyam, written in the form of quatrains (''rubāʿiyāt'' ). This poetry became widely known to the English-reading world in a translation by Edward FitzGerald (''Rubaiyat of Omar Khayyam'', 1859), which enjoyed great success in the Orientalism of the ''fin de siècle''. Provided by Wikipedia
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5by Omar Khayyam
Published 1982Madrāsu : Guṇṭūru : Padmanābhasvāmi ; prāptisthānam Karrā Śyāmalādēvi, 1982.16, 58 p., [1] leaf of plates : port. ; 23 cm. -
6by Omar Khayyam
Published 1959[Ṭihrān] : Intishārāt-i Kitābfurūshī-i Bārānī, [1959 or 1960]34, 423 p. ; 24 cm. -
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Published 1899Boston : L. C. Page and company, incorporated, 1899.282 p. 1 l. : front. (port.) plates. ; 19cm. -
9by Omar Khayyam
Published 1944Tiruvanantapuraṃ : Gōpakumār Bṟadēḻs, 1119 [1944]xviii, 39 p. ; 18 cm. -
10by Omar Khayyam
Published 1977Calcutta : Mrs. A. L. Mitter : available at Modern Book Depot, 1977.xi, 132 p., [1] leaf of plates : port. ; 25 cm. -
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13by Omar Khayyam
Published 1989Varahi Krishi Farm, P.O. Panaje : Kedambāḍi Jattappa Rai, 1989.1 v. (unpaged) ; 13 cm. -
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18by Omar Khayyam
Published 1981Pune : Madhumalati Suru : for copies, Santrika, 1981.14, 34 p., [1] leaf of plates : port. ; 23 cm. -
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