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Ibn Fallus
Shams ad-Dīn Abû’t-Tāhir Ismāʽīl ibn-Ibrāhīm ibn-Ġāzī ibn-ʽAlī ibn Muhammad al-Ḥanafī al-Māridīnī (1194–1252), often called Ismāʽīl ibn-Fullūs or Ibn Fallus, was an Arab Egyptian mathematician of the Islamic Golden Age. Whilst on pilgrimage to Mecca, he tells of an epitome he wrote on number theory (extant in manuscript), which building on the work of Nicomachus, added three new perfect numbers (33,550,336; 8,589,869,056; and 137,438,691,328) to the four already discovered by the Greeks. His table also included seven other supposed perfect numbers which are now known to be incorrect. Roshdi Rashed believes the errors emerged from over-reliance on Nicomachus' method. This work did not reach Europe, and the three perfect numbers were only rediscovered there during the Renaissance, including by Pietro Cataldi.Scott, Paul"Just Perfect, part 2" ''The Australian Mathematics Teacher'', vol. 63, no. 2. p. 3. Further reading * Ismāʽīl ibn-FullūsIʽdād a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mardin
Mardin (; ; romanized: ''Mārdīn''; ; ) is a city and seat of the Artuklu District of Mardin Province in Turkey. It is known for the Artuqids, Artuqid architecture of its old city, and for its strategic location on a rocky hill near the Tigris River. The old town of the city is under the protection of UNESCO, which forbids new constructions to preserve its façade. The city had a population of 129,864 in 2021. The population is a mix of Kurds, Arabs, Mhallami, and Assyrian people, Assyrians. History Antiquity and etymology A legal document from Neo-Assyrian period has one mention of a road leading to Mardiānê - which is believed to be modern-day Mardin - indicating that the name has roots dating back to at least the Neo-Assyrian period. The city survived into the Syriac Christian period as the name of Mount Izla on which in the early 4th century stood the monastery of Nisibis, housing seventy monks. In the Roman period, the city itself was known as ''Marida'' (''Merid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematical model, models, and mathematics#Calculus and analysis, change. History One of the earliest known mathematicians was Thales of Miletus (); he has been hailed as the first true mathematician and the first known individual to whom a mathematical discovery has been attributed. He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales's theorem. The number of known mathematicians grew when Pythagoras of Samos () established the Pythagorean school, whose doctrine it was that mathematics ruled the universe and whose motto was "All is number". It was the Pythagoreans who coined the term "mathematics", and with whom the study of mathematics for its own sake begins. The first woman math ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arab Egyptians
Egyptians (, ; , ; ) are an ethnic group native to the Nile, Nile Valley in Egypt. Egyptian identity is closely tied to Geography of Egypt, geography. The population is concentrated in the Nile Valley, a small strip of cultivable land stretching from the Cataracts of the Nile, First Cataract to the Mediterranean Basin, Mediterranean and enclosed by desert both to the Eastern Desert, east and to the Western Desert (North Africa), west. This unique geography has been the basis of the DNA history of Egypt, development of Egyptian society since Ancient Egypt, antiquity. The daily language of the Egyptians is a continuum of the local variety of Arabic, varieties of Arabic; the most famous dialect is known as Egyptian Arabic or ''Masri''. Additionally, a sizable minority of Egyptians living in Upper Egypt speak Sa'idi Arabic. Egyptians are predominantly adherents of Sunni Islam with a small Shia minority and a significant proportion who follow native Sufi tariqah, orders.Hoffman, Val ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
