• Thumbnail for Poincaré group
    The Poincaré group, named after Henri Poincaré (1905), was first defined by Hermann Minkowski (1908) as the isometry group of Minkowski spacetime. It is...
    15 KB (2,173 words) - 11:07, 14 November 2024
  • Thumbnail for Representation theory of the Poincaré group
    theory of the Poincaré group is an example of the representation theory of a Lie group that is neither a compact group nor a semisimple group. It is fundamental...
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  • Thumbnail for Henri Poincaré
    manifold Poincaré duality Poincaré disk model Poincaré expansion Poincaré gauge Poincaré group Poincaré half-plane model Poincaré homology sphere Poincaré inequality...
    90 KB (9,889 words) - 02:16, 7 November 2024
  • In theoretical physics, a super-Poincaré algebra is an extension of the Poincaré algebra to incorporate supersymmetry, a relation between bosons and fermions...
    17 KB (2,744 words) - 11:29, 11 August 2024
  • Henri Poincaré in 1904, the theorem concerns spaces that locally look like ordinary three-dimensional space but which are finite in extent. Poincaré hypothesized...
    44 KB (5,328 words) - 19:43, 15 November 2024
  • Thumbnail for Lie group
    the theory of discrete groups that had developed in the theory of modular forms, in the hands of Felix Klein and Henri Poincaré. The initial application...
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  • Thumbnail for Group (mathematics)
    general group. Lie groups appear in symmetry groups in geometry, and also in the Standard Model of particle physics. The Poincaré group is a Lie group consisting...
    102 KB (13,147 words) - 17:34, 8 November 2024
  • Lorentz transformations and Poincaré transformations; conversely, the group contraction in the classical limit c → ∞ of Poincaré transformations yields Galilean...
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  • Wigner's classification (category Representation theory of Lie groups)
    representations of the Poincaré group which have either finite or zero mass eigenvalues. (These unitary representations are infinite-dimensional; the group is not semisimple...
    10 KB (1,422 words) - 21:11, 24 September 2023
  • Thumbnail for Wightman axioms
    the Wightman axioms is that there is a Hilbert space, upon which the Poincaré group acts unitarily. In this way, the concepts of energy, momentum, angular...
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  • Thumbnail for General linear group
    linear group: for instance, the special affine group is the subgroup defined by the semidirect product, SL(n, F) ⋉ Fn, and the Poincaré group is the affine...
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  • Sitter algebra to the super-Poincaré algebra as the AdS radius diverges R → ∞; or the Poincaré group to the Galilei group, as the speed of light diverges:...
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  • Thumbnail for Euclidean group
    the same class. Fixed points of isometry groups in Euclidean space Euclidean plane isometry Poincaré group Coordinate rotations and reflections Reflection...
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  • Thumbnail for Symmetry (physics)
    is described in special relativity by a group of transformations of the spacetime known as the Poincaré group. Another important example is the invariance...
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  • isometry group of the Poincaré half-plane model of the hyperbolic plane is PSL(2,R). The isometry group of Minkowski space is the Poincaré group. Riemannian...
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  • Thumbnail for Lorentz group
    the same manner as special relativity. The Lorentz group is a subgroup of the Poincaré group—the group of all isometries of Minkowski spacetime. Lorentz...
    65 KB (9,740 words) - 02:08, 28 September 2024
  • Thumbnail for Symplectic group
    mathematics, the name symplectic group can refer to two different, but closely related, collections of mathematical groups, denoted Sp(2n, F) and Sp(n) for...
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  • extend the Poincaré group or the conformal group. Of particular interest are the orthosymplectic groups Osp(M|N) and the superunitary groups SU(M|N). An...
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  • Thumbnail for Lorentz transformation
    of transformations that also includes translations is known as the Poincaré group. Many physicists—including Woldemar Voigt, George FitzGerald, Joseph...
    105 KB (14,612 words) - 08:18, 10 October 2024
  • group generated by the orthogonal reflections. The Poincaré group is the affine group of the Lorentz group O(1,3): R 1 , 3 ⋊ O ⁡ ( 1 , 3 ) {\displaystyle...
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  • mathematics, the Poincaré duality theorem, named after Henri Poincaré, is a basic result on the structure of the homology and cohomology groups of manifolds...
    17 KB (2,694 words) - 02:09, 28 September 2024
  • point. There is a generalization of this concept to cover Poincaré covariance and Poincaré invariance. In general, the (transformational) nature of a...
    21 KB (2,917 words) - 00:21, 24 September 2024
  • after Henri Poincaré: Euler–Poincaré characteristic Hilbert–Poincaré series Poincaré–Bendixson theorem Poincaré–Birkhoff theorem Poincaré–Birkhoff–Witt...
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  • mathematics, the κ-Poincaré group, named after Henri Poincaré, is a quantum group, obtained by deformation of the Poincaré group into a Hopf algebra...
    3 KB (556 words) - 08:17, 9 October 2024
  • The BMS group also has a similar structure as the Poincaré group: just as the Poincaré group is a semidirect product between the Lorentz group and the...
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  • Thumbnail for Group theory
    Examples of the use of groups in physics include the Standard Model, gauge theory, the Lorentz group, and the Poincaré group. Group theory can be used to...
    40 KB (5,207 words) - 17:31, 31 October 2024
  • κ-Poincaré or kappa-Poincaré, so named after Henri Poincaré, may refer to: K-Poincaré algebra, Kappa-Poincaré Hopf algebra K-Poincaré group, the Kappa-Poincaré...
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  • {A}}(O_{2})]=0} . Poincaré covariance: A strongly continuous unitary representation U ( P ) {\displaystyle U({\mathcal {P}})} of the Poincaré group P {\displaystyle...
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  • with 1 ≤ p ≤ n. The lemma was introduced by Henri Poincaré in 1886. Especially in calculus, the Poincaré lemma also says that every closed 1-form on a simply...
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  • Thumbnail for Unitary group
    unitary group of degree n, denoted U(n), is the group of n × n unitary matrices, with the group operation of matrix multiplication. The unitary group is a...
    21 KB (3,343 words) - 19:11, 23 May 2024