• In mathematics, the Poisson boundary is a probability space associated to a random walk. It is an object designed to encode the asymptotic behaviour of...
    14 KB (2,325 words) - 01:40, 4 October 2024
  • potential theory, the Poisson kernel is an integral kernel, used for solving the two-dimensional Laplace equation, given Dirichlet boundary conditions on the...
    9 KB (1,481 words) - 16:09, 28 May 2024
  • Screened Poisson equation Optics Poisson's spot Elasticity Poisson's ratio Dirichlet–Poisson problem Poisson algebra Poisson superalgebra Poisson boundary Poisson...
    3 KB (218 words) - 17:05, 20 March 2022
  • Thumbnail for Poisson bracket
    In mathematics and classical mechanics, the Poisson bracket is an important binary operation in Hamiltonian mechanics, playing a central role in Hamilton's...
    24 KB (4,029 words) - 21:36, 1 June 2025
  • Thumbnail for Manifold
    19th century mathematics was analytical mechanics, as developed by Siméon Poisson, Jacobi, and William Rowan Hamilton. The possible states of a mechanical...
    69 KB (9,547 words) - 19:07, 12 June 2025
  • equation or Poisson's equation for the magnetic scalar potential, the boundary condition is a Neumann condition. In spatial ecology, a Neumann boundary condition...
    4 KB (520 words) - 20:59, 21 March 2022
  • Thumbnail for Geometric group theory
    study of random walks on groups and related boundary theory, particularly the notion of Poisson boundary (see e.g.). The study of amenability and of groups...
    38 KB (4,308 words) - 13:31, 7 April 2024
  • {\displaystyle \log |F|=Re(\log F)} is a harmonic function, we can apply Poisson integral formula to it, and obtain log ⁡ | F ( 0 ) | = 1 2 π ∫ 0 2 π log...
    9 KB (1,836 words) - 14:38, 19 March 2025
  • The Poisson–Boltzmann equation describes the distribution of the electric potential in solution in the direction normal to a charged surface. This distribution...
    27 KB (4,186 words) - 21:51, 3 June 2025
  • The uniqueness theorem for Poisson's equation states that, for a large class of boundary conditions, the equation may have many solutions, but the gradient...
    6 KB (900 words) - 09:52, 1 April 2025
  • In mathematics, the Poisson summation formula is an equation that relates the Fourier series coefficients of the periodic summation of a function to values...
    30 KB (4,951 words) - 03:09, 20 April 2025
  • Thumbnail for Laplace's equation
    any solution of the Poisson equation in V: ∇ ⋅ ∇ u = − f , {\displaystyle \nabla \cdot \nabla u=-f,} and u assumes the boundary values g on S, then we...
    33 KB (5,075 words) - 15:19, 13 April 2025
  • In mathematics, the discrete Poisson equation is the finite difference analog of the Poisson equation. In it, the discrete Laplace operator takes the...
    11 KB (1,963 words) - 14:21, 13 May 2025
  • boundary, roughly speaking, is a universal moduli space for the Poisson integral, expressing a harmonic function on a group in terms of its boundary values...
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  • Thumbnail for Grain boundary
    \nu } is Poisson's ratio, and r 0 {\displaystyle r_{0}} is the radius of the dislocation core. It can be seen that as the energy of the boundary increases...
    31 KB (4,175 words) - 22:49, 15 June 2025
  • Thumbnail for Blown flap
    3066 | Flight Archive". Rebuffet, Pierre; Poisson-Quinton, P. H. (April 1952). "Investigations of the boundary-layer control on a full scale swept wing...
    17 KB (2,199 words) - 11:47, 11 March 2025
  • Laplace's equation Laplace operator Harmonic function Spherical harmonic Poisson integral formula Klein–Gordon equation Korteweg–de Vries equation Modified...
    2 KB (157 words) - 18:19, 14 March 2022
  • phases. Another famous free-boundary problem is the obstacle problem, which bears close connections to the classical Poisson equation. The solutions of...
    10 KB (1,642 words) - 18:04, 27 April 2024
  • Dirichlet problem (category Boundary value problems)
    unit disk in R2 is given by the Poisson integral formula. If f {\displaystyle f} is a continuous function on the boundary ∂ D {\displaystyle \partial D}...
    14 KB (2,013 words) - 13:00, 12 June 2025
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    by Louis Bachelier to study price changes on the Paris Bourse, and the Poisson process, used by A. K. Erlang to study the number of phone calls occurring...
    168 KB (18,657 words) - 20:31, 17 May 2025
  • {\displaystyle \operatorname {Out} (F_{n})} and in identifying the Poisson boundary of Out ⁡ ( F n ) {\displaystyle \operatorname {Out} (F_{n})} . There...
    10 KB (1,676 words) - 19:13, 27 January 2024
  • consider the Poisson problem − ∇ 2 u = f {\displaystyle -\nabla ^{2}u=f} on some domain Ω, subject to the boundary condition u = 0 on the boundary of Ω. To...
    8 KB (1,264 words) - 09:11, 4 December 2024
  • In mathematics, some boundary value problems can be solved using the methods of stochastic analysis. Perhaps the most celebrated example is Shizuo Kakutani's...
    7 KB (1,265 words) - 18:10, 7 May 2025
  • Thumbnail for Grain boundary sliding
    Grain boundary sliding (GBS) is a material deformation mechanism where grains slide against each other. This occurs in polycrystalline material under external...
    22 KB (2,860 words) - 00:06, 23 May 2025
  • 294–296, Poisson transforms a volume integral (which is used to evaluate a quantity Q) into a surface integral. To make this transformation, Poisson follows...
    45 KB (7,538 words) - 16:10, 30 May 2025
  • the conditions for this formula more stringent. The formula follows from Poisson integral formula applied to u: u ( z ) = 1 2 π ∫ 0 2 π u ( e i ψ ) Re ⁡...
    2 KB (415 words) - 09:43, 30 April 2025
  • discrimination Vincenzo Brunacci (1810), Carl Friedrich Gauss (1829), Siméon Poisson (1831), Mikhail Ostrogradsky (1834), and Carl Jacobi (1837) have been among...
    58 KB (9,530 words) - 08:36, 5 June 2025
  • ')={\frac {1}{4\pi |\mathbf {x} -\mathbf {x} '|}}~.} For the screened Poisson equation, [ − Δ + k 2 ] Φ ( x , x ′ ) = δ ( x − x ′ ) , k ∈ R , {\displaystyle...
    8 KB (1,241 words) - 10:05, 26 April 2025
  • basic shapes in the 19th century: the rectangular membrane by Siméon Denis Poisson in 1829, the equilateral triangle by Gabriel Lamé in 1852, and the circular...
    20 KB (2,975 words) - 18:26, 19 May 2025
  • Poisson's ratio. In addition, the mechanical element's macroscopic properties (geometric properties) such as its length, width, thickness, boundary constraints...
    251 KB (31,183 words) - 19:07, 15 June 2025