• the Coxeter complex, named after H. S. M. Coxeter, is a geometrical structure (a simplicial complex) associated to a Coxeter group. Coxeter complexes are...
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  • Thumbnail for Coxeter–Dynkin diagram
    a Coxeter–Dynkin diagram (or Coxeter diagram, Coxeter graph) is a graph with numerically labeled edges (called branches) representing a Coxeter group...
    57 KB (3,217 words) - 14:44, 18 October 2024
  • In mathematics, a Coxeter group, named after H. S. M. Coxeter, is an abstract group that admits a formal description in terms of reflections (or kaleidoscopic...
    35 KB (3,758 words) - 10:19, 16 October 2024
  • Thumbnail for Harold Scott MacDonald Coxeter
    the Coxeter graph, Coxeter groups, Coxeter's loxodromic sequence of tangent circles, Coxeter–Dynkin diagrams, and the Todd–Coxeter algorithm. Coxeter was...
    16 KB (1,627 words) - 18:52, 26 October 2024
  • symbolic notation developed by Coxeter. Some complex polytopes which are not fully regular have also been described. The complex line C 1 {\displaystyle \mathbb...
    154 KB (6,979 words) - 07:15, 25 September 2024
  • a building Δ is a Coxeter group W, which determines a highly symmetrical simplicial complex Σ = Σ(W,S), called the Coxeter complex. A building Δ is glued...
    26 KB (3,201 words) - 23:01, 4 August 2024
  • or 5-orthoplex. Coxeter, Regular Polytopes, sec 1.8 Configurations Coxeter, Complex Regular Polytopes, p.117 H.S.M. Coxeter: Coxeter, Regular Polytopes...
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  • real reflection groups (the Coxeter groups or Weyl groups, including the symmetry groups of regular polyhedra). A (complex) reflection r (sometimes also...
    28 KB (2,292 words) - 19:48, 10 January 2024
  • Parabolic subgroup of a reflection group (category Coxeter groups)
    depends on context—for example, whether one is discussing general Coxeter groups or complex reflection groups—but in all cases the collection of parabolic...
    28 KB (3,742 words) - 00:35, 1 November 2024
  • Thumbnail for Regular 4-polytope
    Coxeter 1973, § 1.8 Configurations Coxeter, Complex Regular Polytopes, p.117 Conway, Burgiel & Goodman-Strauss 2008, p. 406, Fig 26.2 Coxeter, Star...
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  • Thumbnail for Regular complex polygon
    regular complex polygons have been completely characterized, and can be described using a symbolic notation developed by Coxeter. A regular complex polygon...
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  • Thumbnail for Ordered Bell number
    number of faces in the Coxeter complex associated with a Coxeter group of type A n − 1 {\displaystyle A_{n-1}} . Here, a Coxeter group can be thought of...
    37 KB (5,070 words) - 13:42, 15 October 2024
  • Thumbnail for 7-cube
    with -1 < xi < 1. Coxeter, Regular Polytopes, sec 1.8 Configurations Coxeter, Complex Regular Polytopes, p.117 H.S.M. Coxeter: Coxeter, Regular Polytopes...
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  • previous property. Every Coxeter complex, and more generally every building (in the sense of Tits), is shellable. The boundary complex of a (convex) polytope...
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  • Thumbnail for Witting polytope
    Witting polytope (category Complex analysis)
    In 4-dimensional complex geometry, the Witting polytope is a regular complex polytope, named as: 3{3}3{3}3{3}3, and Coxeter diagram . It has 240 vertices...
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  • Thumbnail for Hessian polyhedron
    Hessian polyhedron (category Complex analysis)
    quasiregular form. Coxeter, Complex Regular polytopes, p.123 Coxeter Regular Convex Polytopes, 12.5 The Witting polytope Coxeter, Complex Regular polytopes...
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  • Thumbnail for 5-orthoplex
    from the B5 Coxeter plane, including the regular 5-cube and 5-orthoplex. Coxeter, Regular Polytopes, sec 1.8 Configurations Coxeter, Complex Regular Polytopes...
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  • Thumbnail for 6-cube
    space - ScienceDirect". Coxeter, Regular Polytopes, sec 1.8 Configurations Coxeter, Complex Regular Polytopes, p.117 Coxeter, H.S.M. Regular Polytopes...
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  • Thumbnail for Rectified 5-simplexes
    vertices) Coxeter, Regular Polytopes, sec 1.8 Configurations Coxeter, Complex Regular Polytopes, p.117 Klitzing, Richard. "o3x3o3o3o - rix". Coxeter, Regular...
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  • meshes:Surface (polygonal) Simplification 1997. (retrieved May 2016) Coxeter, H. S. M., Regular Complex Polytopes, Cambridge University Press, 1974. Introduction...
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  • Thumbnail for Tesseract
    1016/0012-365X(82)90185-6, MR 0676709 Coxeter 1973, p. 12, §1.8 Configurations. Coxeter 1973, p. 293. Coxeter, H. S. M., Regular Complex Polytopes, second edition...
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  • have orthographic projections in the H 3 {\displaystyle \mathrm {H} _{3}} Coxeter plane that contain various decagrammic symmetries, which include compound...
    22 KB (2,527 words) - 03:23, 10 November 2024
  • Thumbnail for Boerdijk–Coxeter helix
    The Boerdijk–Coxeter helix, named after H. S. M. Coxeter and Arie Hendrick Boerdijk [es], is a linear stacking of regular tetrahedra, arranged so that...
    10 KB (976 words) - 21:35, 11 April 2024
  • Thumbnail for 8-cube
    8th in an infinite series of hypercube: Coxeter, Regular Polytopes, sec 1.8 Configurations Coxeter, Complex Regular Polytopes, p.117 Klitzing, Richard...
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  • In mathematics, the Coxeter–Todd lattice K12, discovered by Coxeter and Todd (1953), is a 12-dimensional even integral lattice of discriminant 36 with...
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  • Thumbnail for 5-cell
    'pentachoron, pentatope, pentahedroid, tetrahedral pyramid, or 4-simplex (Coxeter's α 4 {\displaystyle \alpha _{4}} polytope), the simplest possible convex...
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  • complex geometry is the study of geometric structures and constructions arising out of, or described by, the complex numbers. In particular, complex geometry...
    26 KB (3,677 words) - 14:31, 7 September 2023
  • Thumbnail for 4 21 polytope
    He called it an 8-ic semi-regular figure. Its Coxeter symbol is 421, describing its bifurcating Coxeter-Dynkin diagram, with a single ring on the end...
    38 KB (2,556 words) - 04:13, 24 July 2024
  • Thumbnail for Coxeter notation
    Coxeter notation (also Coxeter symbol) is a system of classifying symmetry groups, describing the angles between fundamental reflections of a Coxeter...
    175 KB (6,423 words) - 21:15, 29 July 2024
  • Thumbnail for Regular polytope
    classified by their isometry group. These are finite Coxeter groups, but not every finite Coxeter groups may be realised as the isometry group of a regular...
    42 KB (5,267 words) - 10:11, 30 October 2024