Al-Jabr

The Compendious Book on Calculation by Completion and Balancing
title page in Arabic writing and calligraphy; hand-drawn ornamental frame; parchment is gilded and stained from age
Title page, 9th century
AuthorMuhammad ibn Musa al-Khwarizmi
Original titleكتاب المختصر في حساب الجبر والمقابلة
IllustratorMuhammad ibn Musa al-Khwarizmi
LanguageArabic
SubjectAlgebra[a]
GenreMathematics
Publication date
820
Publication placeAbbasid Caliphate
Original text
كتاب المختصر في حساب الجبر والمقابلة at Arabic Wikisource
TranslationThe Compendious Book on Calculation by Completion and Balancing at Wikisource

Al-Jabr (Arabic: الجبر), also known as The Compendious Book on Calculation by Completion and Balancing (Arabic: الكتاب المختصر في حساب الجبر والمقابلة, al-Kitāb al-Mukhtaṣar fī Ḥisāb al-Jabr wal-Muqābalah;[b] or Latin: Liber Algebræ et Almucabola), is an Arabic mathematical treatise on algebra written in Baghdad around 820 by the Persian polymath Al-Khwarizmi. It was a landmark work in the history of mathematics, with its title being the ultimate etymology of the word "algebra" itself, later borrowed into Medieval Latin as algebrāica.

Al-Jabr provided an exhaustive account of solving for the positive roots of polynomial equations up to the second degree.[1]: 228 [c] It was the first text to teach elementary algebra, and the first to teach algebra for its own sake.[d] It also introduced the fundamental concept of "reduction" and "balancing" (which the term al-jabr originally referred to), the transposition of subtracted terms to the other side of an equation, i.e. the cancellation of like terms on opposite sides of the equation.[e] Mathematics historian Victor J. Katz regards Al-Jabr as the first true algebra text that is still extant.[f] Translated into Latin by Robert of Chester in 1145, it was used until the sixteenth century as the principal mathematical textbook of European universities.[4][g][6][7]

Several authors have also published texts under this name, including Abu Hanifa Dinawari, Abu Kamil, Abū Muḥammad al-ʿAdlī, Abū Yūsuf al-Miṣṣīṣī, 'Abd al-Hamīd ibn Turk, Sind ibn ʿAlī, Sahl ibn Bišr, and Šarafaddīn al-Ṭūsī.


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  1. ^ a b c Boyer, Carl B. (1991). "The Arabic Hegemony". A History of Mathematics (Second ed.). John Wiley & Sons, Inc. ISBN 0-471-54397-7.
  2. ^ Gandz; Saloman (1936). The sources of al-Khwarizmi's algebra. Vol. I. Osiris. pp. 263–277.
  3. ^ Katz, Victor J.; Barton, Bill (December 2006). "Stages in the history of algebra with implications for teaching". Educational Studies in Mathematics. 66 (2): 185–201. doi:10.1007/s10649-006-9023-7. See p. 190.
  4. ^ Philip Khuri Hitti (2002). History of the Arabs. Macmillan International Higher Education. pp. 379. ISBN 9780333631423.
  5. ^ Fred James Hill, Nicholas Awde (2003). A History of the Islamic World. Hippocrene Books. pp. 55. ISBN 9780781810159.
  6. ^ Overbay, Shawn; Schorer, Jimmy; Conger, Heather. "Al-Khwarizmi". University of Kentucky.
  7. ^ "Islam Spain and the history of technology". www.sjsu.edu. Retrieved 24 January 2018.

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