Ghiyath al-Din Abul Fateh Omar Ibn Ibrahim al-Khayyam was born at Nishapur, the provincial capital of Khurasan round 1044 C.E. (c. 1038 to 1048). Persian mathematician, astronomer, philosopher, doctor and poet, he is commonly renowned as Omar Khayyam. Khayyam means the tent-maker, and whereas usually advised as Persian, it has furthermore been proposed that he could have belonged to the Khayyami tribe of Arab source who might have resolved in Persia. Little is known about his early life, except for the detail that he was educated at Nishapur and lived there and at Samarqand for most of his life. He was a up to date of Nidham al-Mulk Tusi. opposing to the available possibilities, he did not like to be engaged at the King’s court and led a calm life dedicated to seek for information. He traveled to the large centers of discovering, Samarqand, Bukhara, Balkh and Isphahan in order to study farther and exchange outlooks with the scholars there. While at Samarqand he was patronized by a dignitary, Abu Tahir. He past away at Nishapur in 1123-24.

Algebra would appear to grade first among the fields to which he contributed. He made an attempt to classify most algebraic equations, including the third degree formulas and, in detail, offered solutions for a number of them. ‘This includes geometric’ answers of cubic formulas and partial geometric answers of most other formulas. His publication Maqalat fi al-Jabr wa al-Muqabila is a expert- piece on algebra and has large importance in the development of algebra. His remarkable classification of formulas is founded on the complexity of the equations, as the higher the degree of an equation, the more periods, or blends of periods, it will comprise. Thus, Khayyam identifies 13 different types of cubic formula. His method of explaining equations is mostly geometrical and counts upon an ingenious assortment of correct conics. He furthermore evolved the binomial expansion when the exponent is a affirmative integer. In fact, he has been advised to be the first to find the binomial theorem and work out binomial coefficients. In geometry, he studied generalities of Euclid and assisted to the theory of parallel lines.

The Saljuq Sultan, Malikshah Jalal al-Din, called him to the new observatory at Ray round 1074 and assigned him the task of working out a correct solar calendar. This had become essential in view of the income collections and other administrative affairs that were to be performed at distinct times of the year. Khayyam introduced a calendar that was remarkably unquestionable, and was named as Al-Tarikh-al-Jalali. It had an error of one day in 3770 years and was thus even superior to the Georgian calendar (error of 1 day in 3330 years).

His assistance to other areas of research encompass a study of generalities of Euclid, development of procedures for the accurate conclusion of exact gravity, etc. In metaphysics, he wrote three publications Risala Dar Wujud and the lately found out Nauruz- namah. He was furthermore a renowned astronomer and a doctor.

Apart from being a researcher, Khayyam was also a well-known poet. In this capability, he has become more popularly renowned in the Western world since 1839, when Edward Fitzgerald published an English transformation of his Rubaiyat (quatrains). This has since become one of the most well liked classics of world publications. It should be treasured that it is practically unrealistic to exactly translate any literary work into another dialect, what to talk of poetry, particularly when it engages mystical and philosophical messages of deep complexity. regardless of this, the popularity of the translation of Rubaiyat would show the wealth of his wealthy considered.

Khayyam wrote a large number of publications and monographs in the overhead localities. Out of these, 10 books and thirty monographs have been recognised. Of these, four anxiety numbers, three physics, three metaphysics, one algebra and one geometry.

His leverage on the development of numbers in general and analytical geometry, in particular, has been immense. His work stayed ahead of others for centuries till the times of Descartes, who applied the same geometrical approach in solving cubics. His good reputation as a mathematician has been partially eclipsed by his popularity as a poet; nonetheless his assistance as a philosopher and researcher has been of important value in furthering the frontiers of human knowledge.

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**Klanjanje namaza, Namaz**- molitva Allahu dž.š.

**Zekjat**- 2.5% od imovine koja se ne koristi (zlato, novac, nekretnine) koju svaki Musliman izdvaja godišnje za pomoć siromašnima.

**Hadždž**- vjerski obred koji vrši onaj ko može najmanje jednom u životu.

**Post**- proces čuvanja tijela od grijeha, vode i hrane tokom mjeseca Ramazana.

**Ramazan**- mjesec u Islamskom kalendaru u kome je početo objavljivanje Kur'an-a. Islamski kalendar se mjeri Mjesečevom-Lunarnom godinom.

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