人类文明最早的5大文明有3个在中东地区， 假如中东地区能象中华文明那样一直是大一统占主导，之后的世界历史，中东文明早就一骑绝尘，根本没有欧洲人啥事了。
看看这几千年各种原因，把中东地区分裂成几十个国家，基本就被未来越拉越远了。如果中东各国是象中国一样的大一统？？
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From Wikipedia, the free encyclopedia
(Redirected from Muhammad ibn Musa al-Khwarizmi)
For other uses, see Al-Khwarizmi (disambiguation).
Muhammad ibn Musa al-Khwarizmi[note 1] (Arabic: محمد بن موسى الخوارزمي; c. 780 – c. 850), often referred to as simply al-Khwarizmi, was a Persian polymath who produced vastly influential Arabic-language works in mathematics, astronomy, and geography. Hailing from Khwarazm, he was appointed as the astronomer and head of the House of Wisdom in the city of Baghdad around 820 CE.
His popularizing treatise on algebra, compiled between 813–33 as Al-Jabr (The Compendious Book on Calculation by Completion and Balancing),[6]: 171 presented the first systematic solution of linear and quadratic equations. One of his achievements in algebra was his demonstration of how to solve quadratic equations by completing the square, for which he provided geometric justifications.[7]: 14 Because al-Khwarizmi was the first person to treat algebra as an independent discipline and introduced the methods of "reduction" and "balancing" (the transposition of subtracted terms to the other side of an equation, that is, the cancellation of like terms on opposite sides of the equation),[8] he has been described as the father[9][10][11] or founder[12][13] of algebra. The English term algebra comes from the short-hand title of his aforementioned treatise (الجبر Al-Jabr, transl. "completion" or "rejoining").[14] His name gave rise to the English terms algorism and algorithm; the Spanish, Italian, and Portuguese terms algoritmo; and the Spanish term guarismo[15] and Portuguese term algarismo, both meaning "digit".[16]
看看这几千年各种原因，把中东地区分裂成几十个国家，基本就被未来越拉越远了。如果中东各国是象中国一样的大一统？？
Al-Khwarizmi
140 languagesTools
From Wikipedia, the free encyclopedia
(Redirected from Muhammad ibn Musa al-Khwarizmi)
For other uses, see Al-Khwarizmi (disambiguation).
| Muḥammad ibn Mūsā al-Khwārizmī | |
|---|---|
| Academic work | |
| محمد بن موسى الخوارزمي | |
 Woodcut panel depicting al-Khwarizmi, 20th century | |
| Born | c. 780 Khwarazm, Abbasid Caliphate |
| Died | c. 850[2][3] (aged ~70) Abbasid Caliphate |
| Nationality | Persian |
| Occupation | Head of the House of Wisdom in Baghdad (appt. c. 820) |
| Era | Islamic Golden Age |
| Main interests | |
| Notable works |
|
| Notable ideas | Treatises on algebra and the Hindu–Arabic numeral system |
| Influenced | Abu Kamil of Egypt[1] |
His popularizing treatise on algebra, compiled between 813–33 as Al-Jabr (The Compendious Book on Calculation by Completion and Balancing),[6]: 171 presented the first systematic solution of linear and quadratic equations. One of his achievements in algebra was his demonstration of how to solve quadratic equations by completing the square, for which he provided geometric justifications.[7]: 14 Because al-Khwarizmi was the first person to treat algebra as an independent discipline and introduced the methods of "reduction" and "balancing" (the transposition of subtracted terms to the other side of an equation, that is, the cancellation of like terms on opposite sides of the equation),[8] he has been described as the father[9][10][11] or founder[12][13] of algebra. The English term algebra comes from the short-hand title of his aforementioned treatise (الجبر Al-Jabr, transl. "completion" or "rejoining").[14] His name gave rise to the English terms algorism and algorithm; the Spanish, Italian, and Portuguese terms algoritmo; and the Spanish term guarismo[15] and Portuguese term algarismo, both meaning "digit".[16]
