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  2. Al-Jabr - Wikipedia

    en.wikipedia.org/wiki/Al-Jabr

    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 ...

  3. Elementary algebra - Wikipedia

    en.wikipedia.org/wiki/Elementary_algebra

    The graph of the logarithm to base 2 crosses the x axis (horizontal axis) at 1 and passes through the points with coordinates (2, 1), (4, 2), and (8, 3). For example, log 2 (8) = 3, because 2 3 = 8. The graph gets arbitrarily close to the y axis, but does not meet or intersect it.

  4. Algebra - Wikipedia

    en.wikipedia.org/wiki/Algebra

    Algebra is the branch of mathematics that studies certain abstract systems, known as algebraic structures, and the manipulation of expressions within those systems. It is a generalization of arithmetic that introduces variables and algebraic operations other than the standard arithmetic operations, such as addition and multiplication.

  5. Fundamental theorem of algebra - Wikipedia

    en.wikipedia.org/wiki/Fundamental_theorem_of_algebra

    However, these counterexamples rely on −1 having a square root. If we take a field where −1 has no square root, and every polynomial of degree n ∈ I has a root, where I is any fixed infinite set of odd numbers, then every polynomial f(x) of odd degree has a root (since (x 2 + 1) k f(x) has a root, where k is chosen so that deg(f) + 2k ∈ I).

  6. Linear algebra - Wikipedia

    en.wikipedia.org/wiki/Linear_algebra

    1v = v, where 1 denotes the multiplicative identity of F. The first four axioms mean that V is an abelian group under addition. An element of a specific vector space may have various natures; for example, it could be a sequence , a function , a polynomial , or a matrix .

  7. Associative algebra - Wikipedia

    en.wikipedia.org/wiki/Associative_algebra

    Every polynomial ring R[x 1, ..., x n] is a commutative R-algebra. In fact, this is the free commutative R-algebra on the set {x 1, ..., x n}. The free R-algebra on a set E is an algebra of "polynomials" with coefficients in R and noncommuting indeterminates taken from the set E. The tensor algebra of an R-module is naturally an associative R ...

  8. History of algebra - Wikipedia

    en.wikipedia.org/wiki/History_of_algebra

    The word "algebra" is derived from the Arabic word الجبر al-jabr, and this comes from the treatise written in the year 830 by the medieval Persian mathematician, Al-Khwārizmī, whose Arabic title, Kitāb al-muḫtaṣar fī ḥisāb al-ğabr wa-l-muqābala, can be translated as The Compendious Book on Calculation by Completion and Balancing.

  9. Prayagraj - Wikipedia

    en.wikipedia.org/wiki/Prayagraj

    Prayagraj (/ ˈ p r eɪ ə ˌ ɡ r ɑː dʒ, ˈ p r aɪ ə-/, Hindi: [pɾəjaːɡɾaːdʒ]; ISO: Prayāgarāja), also known as Allahabad (its official name until 2018), is a metropolis in the Indian state of Uttar Pradesh.