• The Abel equation, named after Niels Henrik Abel, is a type of functional equation of the form f ( h ( x ) ) = h ( x + 1 ) {\displaystyle f(h(x))=h(x+1)}...
    8 KB (1,032 words) - 18:49, 14 July 2025
  • Thumbnail for Niels Henrik Abel
    and Abel had studied all the latest mathematical literature in the university library. During that time, Abel started working on the quintic equation in...
    29 KB (3,469 words) - 23:35, 16 June 2025
  • the Abel–Ruffini theorem (also known as Abel's impossibility theorem) states that there is no solution in radicals to general polynomial equations of degree...
    28 KB (4,098 words) - 09:15, 8 May 2025
  • In mathematics, Abel's identity (also called Abel's formula or Abel's differential equation identity) is an equation that expresses the Wronskian of two...
    10 KB (2,291 words) - 17:43, 15 July 2025
  • In mathematics, an Abel equation of the first kind, named after Niels Henrik Abel, is any ordinary differential equation that is cubic in the unknown...
    3 KB (466 words) - 23:33, 2 June 2024
  • {\displaystyle f(h(x))=h(x+1)\,\!} (Abel equation) f ( h ( x ) ) = c f ( x ) {\displaystyle f(h(x))=cf(x)\,\!} (Schröder's equation). f ( h ( x ) ) = ( f ( x )...
    12 KB (1,632 words) - 13:56, 4 November 2024
  • Tartaglia to equations of degree 3 and that of Lodovico Ferrari for equations of degree 4. Finally Niels Henrik Abel proved, in 1824, that equations of degree...
    14 KB (2,156 words) - 17:48, 9 July 2025
  • Thumbnail for Tautochrone curve
    starting height, find an equation of the curve that yields this result. The tautochrone problem is a special case of Abel's mechanical problem when T...
    17 KB (3,136 words) - 14:13, 18 February 2025
  • order differential equation: v d v d x + f ( x ) v + g ( x ) = 0 {\displaystyle v{dv \over dx}+f(x)v+g(x)=0} which is an Abel equation of the second kind...
    4 KB (646 words) - 04:52, 17 June 2025
  • Thumbnail for Cubic equation
    (second-degree) and quartic (fourth-degree) equations, but not for higher-degree equations, by the Abel–Ruffini theorem.) trigonometrically numerical...
    68 KB (10,311 words) - 18:51, 6 July 2025
  • Thumbnail for Schröder's equation
    Schröder's equation to the older Abel equation, α(h(x)) = α(x) + 1. Similarly, the change of variables Ψ(x) = log(φ(x)) converts Schröder's equation to Böttcher's...
    12 KB (1,188 words) - 15:18, 28 May 2025
  • Thumbnail for Iterated function
    this relation is called the translation functional equation, cf. Schröder's equation and Abel equation. On a logarithmic scale, this reduces to the nesting...
    38 KB (4,360 words) - 21:42, 11 June 2025
  • Thumbnail for Fermat's Last Theorem
    texts) states that no three positive integers a, b, and c satisfy the equation an + bn = cn for any integer value of n greater than 2. The cases n = 1...
    103 KB (11,691 words) - 21:23, 14 July 2025
  • interpolation Abel–Plana formula Abel function Abel's integral equation Abel's identity Abel's inequality Abel's irreducibility theorem Abel–Jacobi map Abel–Jacobi...
    2 KB (172 words) - 13:47, 2 September 2022
  • an equation is a mathematical formula that expresses the equality of two expressions, by connecting them with the equals sign =. The word equation and...
    32 KB (4,249 words) - 19:03, 26 March 2025
  • Thumbnail for Gunpowder
    Frederick Abel, worked to improve the properties of gunpowder during the late 19th century. This formed the basis for the Noble-Abel gas equation for internal...
    95 KB (11,626 words) - 22:24, 15 July 2025
  • Thumbnail for Flow (mathematics)
    Anosov flows are isomorphic to Bernoulli shifts. Abel equation Iterated function Schröder's equation Infinite compositions of analytic functions D.V....
    14 KB (2,703 words) - 15:52, 29 June 2025
  • Functional square root (category Functional equations)
    Wayback Machine.) Iterated function Function composition Abel equation Schröder's equation Flow (mathematics) Superfunction Fractional calculus Half-exponential...
    7 KB (662 words) - 02:57, 16 May 2025
  • Superfunction (category Functional equations)
    of Schröder's equation, for his proof, Kneser had constructed the "superfunction" of the exponential map through the corresponding Abel function X {\displaystyle...
    16 KB (2,694 words) - 23:05, 24 May 2025
  • mathematics, Liouville's formula, also known as the Abel–Jacobi–Liouville identity, is an equation that expresses the determinant of a square-matrix solution...
    8 KB (1,415 words) - 04:31, 5 June 2024
  • Thumbnail for Advanced Boolean Expression Language
    in 1983 by Data I/O Corporation, in Redmond, Washington. ABEL includes both concurrent equation and truth table logic formats as well as a sequential state...
    4 KB (377 words) - 20:50, 19 April 2024
  • Thumbnail for Galois theory
    roots, cube roots, etc)? The Abel–Ruffini theorem provides a counterexample proving that there are polynomial equations for which such a formula cannot...
    33 KB (4,221 words) - 15:58, 21 June 2025
  • mathematical function Schröder's equation – Equation for fixed point of functional composition Abel equation – Equation for function that computes iterated...
    8 KB (1,160 words) - 06:57, 28 March 2025
  • Thumbnail for Luis Caffarelli
    Luis Caffarelli (category Partial differential equation theorists)
    differential equations and their applications. Caffarelli is a professor of mathematics at the University of Texas at Austin, and the winner of the 2023 Abel Prize...
    10 KB (806 words) - 18:28, 23 June 2025
  • The Abel Prize (/ˈɑːbəl/ AH-bəl; Norwegian: Abelprisen [ˈɑ̀ːbl̩ˌpriːsn̩]) is awarded annually by the King of Norway to one or more outstanding mathematicians...
    29 KB (1,770 words) - 22:11, 19 June 2025
  • Thumbnail for Quartic equation
    mathematics, a quartic equation is one which can be expressed as a quartic function equaling zero. The general form of a quartic equation is a x 4 + b x 3 +...
    32 KB (6,841 words) - 06:29, 17 July 2025
  • Thumbnail for Quintic function
    quartic equations were solved, until the first half of the 19th century, when the impossibility of such a general solution was proved with the Abel–Ruffini...
    25 KB (4,203 words) - 17:53, 14 May 2025
  • Thumbnail for John Forbes Nash Jr.
    John Forbes Nash Jr. (category Partial differential equation theorists)
    Nirenberg and he were awarded the Abel Prize for their contributions to the field of partial differential equations. As a graduate student in the Princeton...
    69 KB (7,388 words) - 03:59, 21 June 2025
  • North Carolina. Retrieved April 8, 2017. Stewart, A. D (1964). On the Abel equation in n-dimensions, n ≥ 2 (Ph.D. thesis). Austin, Tex.: University of Texas...
    122 KB (7,616 words) - 14:14, 11 July 2025
  • In mathematics, a linear differential equation is a differential equation that is linear in the unknown function and its derivatives, so it can be written...
    30 KB (4,754 words) - 18:32, 3 July 2025