Buyid dynasty in the context of "Safavid Iran"

The Iranian Intermezzo, also called the Persian Renaissance, was a period in Iranian history marked by the rise to power of the first Iranian Muslim dynasties. Beginning 170 years after the Arab conquest of Iran and lasting until the middle of the 11th century, it is noteworthy since it was an interlude between the decay of Arab power under the Abbasid Caliphate and the rise of Turkic power under the Seljuk Empire, which triggered the Sunni Revival. The Iranian Intermezzo brought an end to Arab hegemony over Iranian lands and revived Iran's national spirit, albeit in conformity with Islam, though there were some non-Muslim movements (e.g., Mardavij) that outright rejected the Islamization of Iran. Although Zoroastrianism continued to decline, the movement did succeed in revitalizing the Persian language, with the most significant Persian literature from this period being the Shahnameh by Ferdowsi. The Iranian dynasties that took part in this effort were the Tahirids, the Saffarids, the Ilyasids, the Ghaznavids, the Sajids, the Samanids, the Ziyarids, the Buyids, the Sallarids, the Rawadids, the Marwanids, the Shaddadids, the Kakuyids, the Annazids, and the Hasanwayhids.

According to the historian Alison Vacca, the Iranian Intermezzo "in fact includes a number of other Iranian, mostly Kurdish, minor dynasties in the former caliphal provinces of Armenia, Albania, and Azerbaijan". Likewise, in the second edition of the Encyclopaedia of Islam, the historian Clifford Edmund Bosworth states that the Russian historian Vladimir Minorsky considers the Rawadids to be flourishing during this period.

Abu Talib Muhammad Tughril ibn Mika'il (Persian: ابوطالبْ محمد طغرل بن میکائیل), better known as Tughril (طغرل / طغریل; also spelled Toghril / Tughrul), was a Turkoman chieftain, who founded the Seljuk Empire, ruling from 1037 to 1063.

Tughril united many Turkoman warriors of the Central Asian steppes into a confederacy of tribes and led them in conquest of Khorasan and eastern Persia. He would later establish the Seljuk Sultanate after conquering Persia and taking the Abbasid capital of Baghdad from the Buyids in 1055. Tughril relegated the Abbasid Caliphs to state figureheads and took command of the caliphate's armies in military offensives against the Byzantine Empire and the Fatimids in an effort to expand his empire's borders and unite the Islamic world.

Science in the medieval Islamic world was the science developed and practised during the Islamic Golden Age under the Abbasid Caliphate of Baghdad, the Umayyads of Córdoba, the Abbadids of Seville, the Samanids, the Ziyarids and the Buyids in Persia and beyond, spanning the period roughly between 786 and 1258. Islamic scientific achievements encompassed a wide range of subject areas, especially astronomy, mathematics, and medicine. Other subjects of scientific inquiry included alchemy and chemistry, botany and agronomy, geography and cartography, ophthalmology, pharmacology, physics, and zoology.

Medieval Islamic science had practical purposes as well as the goal of understanding. For example, astronomy was useful for determining the Qibla, the direction in which to pray, botany had practical application in agriculture, as in the works of Ibn Bassal and Ibn al-'Awwam, and geography enabled Abu Zayd al-Balkhi to make accurate maps. Islamic mathematicians such as Al-Khwarizmi, Avicenna and Jamshīd al-Kāshī made advances in algebra, trigonometry, geometry and Arabic numerals. Islamic doctors described diseases like smallpox and measles, and challenged classical Greek medical theory. Al-Biruni, Avicenna and others described the preparation of hundreds of drugs made from medicinal plants and chemical compounds. Islamic physicists such as Ibn Al-Haytham, Al-Bīrūnī and others studied optics and mechanics as well as astronomy, and criticised Aristotle's view of motion.

The Brethren of Purity, also known as The Brethren of Sincerity, were a secret society active during the reign of the Buyid dynasty.

Presumably composed of Muslim philosophers centered in the Buyid port city of Basra, the structure of the organization and the identities of its members have never been clear. Their esoteric teachings and philosophy are expounded in an epistolary style in the Encyclopedia of the Brethren of Purity (Rasā'il Ikhwān al-Ṣafā'), a giant compendium of 52 epistles that would greatly influence later encyclopedias. A good deal of Muslim and Western scholarship has been spent on just pinning down the identities of the Brethren and the century in which they were active.

The Encyclopedia of the Epistles of Purity is an esoteric Shia Islamic text written by the mysterious Brethren of Purity during the Buyid era. Composed of 52 treatises, it had a great influence on later intellectual leading lights of the Muslim world, such as Ibn Arabi, and was transmitted as far abroad within the Muslim world as al-Andalus.

The identity and period of the authors of the Encyclopedia have not been conclusively established, though the work has been mostly linked with Isma'ilism. Idris Imad al-Din, a prominent 15th-century Isma'ili missionary in Yemen, credited the authorship of the encyclopedia to Muhammad al-Taqi, the 9th Isma'ili Imam, who lived in occultation in the era of the Abbasid Caliphate at the beginning of the Islamic Golden Age.

Shiraz is the fifth-most-populous city of Iran and the capital of Fars province, historically known by the exonym Persia proper. As of the 2016 national census, the population of the city was 1,565,572 people, and its built-up area with Sadra was home to almost 1,800,000 inhabitants. A census in 2021 showed an increase in the city's population to 1,995,500 people. Shiraz is located in southwestern Iran on the rudkhaneye khoshk (lit. 'dry river') seasonal river. The city has a moderate climate and has been a regional trade center for over a thousand years.

The earliest reference to the city, as Tiraziš, is on Elamite clay tablets dated to 2000 BCE. The modern city was founded by the Sasanian dynasty and restored by the Umayyad Caliphate in 693 CE and grew prominent under the successive Iranian Saffarid and Buyid dynasties in the 9th and 10th–11th centuries, respectively. In the 13th century, Shiraz became a leading center of the arts and letters, due to the encouragement of its ruler and the presence of many Persian scholars and artists. Two famous poets of Iran, Hafez and Saadi, are from Shiraz, whose tombs are located on the north side of the current city boundaries.